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New Experimental Winter Snowfall Graphics and Forecast Information Available Online

Experimental storm total snowfall graphics are now being generated at NWS offices across the country. These snowfall graphics provide a range of snowfall possibilities in order to better communicate forecast uncertainties. Expected, high-end, and low-end forecast snowfall totals are all included. Specific cities and towns can also be viewed in a tabular format, and can be sorted by county, too. Read More >

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Wyoming Climate      |      Click on Image to Enlarge
Statewide averages and ranks for periods including December 2017 will be available on January 8, 2018*
* 2017-18 Climate Monitoring Release Dates

Wyoming: November 2017

Precipitation - Percent of Normal Temperature - Departure from Normal
Wyoming: Last Month Percent of Normal Precipitation Wyoming: Last Month Departure from Normal Temperature
 Statewide Average (inches) 1.45  Statewide Average (°F) 34.8
 20th Century Average 1.03  20th Century Average 29.0
 Rank - Driest  to Wettest  (123 Years) 101 Rank - Warmest  to Coldest (123 Years) 8
 Rank - Wettest to Driest  (123 Years) 23  Rank - Coldest to Warmest (123 Years) 116
 Driest Month on Record:  November 1939 0.02   Warmest Month on Record: November 1999 38.8
 Wettest Year on Record: November 1942 2.40   Coldest Month on Record: November 1985 19.1

Wyoming: 2017

Precipitation - Percent of Normal Temperature - Departure from Normal
Wyoming: 2017 Percent of Normal Precipitation (Click to Enlarge) Wyoming: 2017 Departure from Normal Temperature
Climate Division:
Wyoming (Statewide Averages)
  Jan
2017
Feb
2017
Mar
2017
Apr
2017
May
2017
Jun
2017
Jul
2017
Aug
2017
Sep
2017
Oct
2017
Nov
2017
Dec
2017
  Total for
2017
  Average Temperature   16.7 27.8 38.4 40.1 49.3 60.0 68.9 63.5 54.1 41.0 34.8     45.0
  20th Century Average   18.4 22.3 29.1 38.8 48.4 57.6 65.3 63.4 53.6 42.5 29.0 20.6   42.6
  Departure from Average   -1.7 5.5 9.3 1.3 0.9 2.4 3.6 0.1 0.5 -1.6 5.8     2.4
  Rank: Warm to Cold (123 yrs)    91 15 3 45 53 30 8 65 58 91 8     8
  Rank: Cold to Warm (123 yrs)    32 109 121 79 71 94 116 59 66 33 116     116
  Precipitation    1.66 2.02 1.88 2.80 1.80 1.09 0.97 0.94 2.21 0.76 1.45     17.58
  20th Century Average   1.06 0.97 1.25 1.77 2.21 1.84 1.28 1.07 1.24 1.20 1.03 1.01    14.92
  Percent of Average    156 208 150 158 81 59 76 88 178 63 141     118
  Rank: Dry to Wet (123 yrs)   115 119 110 115 45 25 35 58 114 32 23     107
  Rank: Wet to Dry (123 yrs)   8 5 14 9 79 99 89 66 10 92 101     17
    
Maps and Statewide Averages for 3, 12 and 60 Months

Wyoming Climate Divisions: Water Year 2016-17 (Oct - Sep)

Wyoming Climate Divisions Map - Click to Enlarge

Wyoming Climate Divisions: November 2017 Rankings

Precipitation Rankings
Driest to Wettest 123 Years
Temperature Rankings
Coldest to Warmest 123 Years
Wyoming Climate Divisions: Last Month Precipitation Ranks (Click to Enlarge) Wyoming Climate Divisions: Last Month Average Temperature Rankings (Click to Enlarge)

Wyoming Climate Division Rankings: 2017

Precipitation Rankings
Driest to Wettest 123 Years
Temperature Rankings
Coldest to Warmest 123 Years
Wyoming Climate Divisions: 2017 Precipitation Rankings (Click to Enlarge) Wyoming Climate Divisions: 2017 Temperature Rankings (Click to Enlarge)

Climate Division 1 - Yellowstone Drainage
Climate Division:
Yellowstone (Division Averages)
  Jan
2017
Feb
2017
Mar
2017
Apr
2017
May
2017
Jun
2017
Jul
2017
Aug
2017
Sep
2017
Oct
2017
Nov
2017
Dec
2017
  Total for
2017
  Average Temperature   13.8 24.1 34.3 35.4 44.4 52.2 61.5 57.5 48.3 36.1 28.2     39.6
  20th Century Average   15.2 18.9 24.3 33.3 42.4 50.3 57.9 56.2 47.4 37.3 24.6 16.9   37.1
  Departure from Avegage   -1.4 5.2 10.1 2.1 2.0 1.7 3.6 1.3 0.9 -1.2 3.6     2.5
  Rank: Warm to Cold (123 yrs)    87 15 2 38 31 30 7 37 48 87 24     6
  Rank: Cold to Warm (123 yrs)    36 109 122 86 93 94 117 87 76 37 100     118
  Precipitation    3.21 5.61 3.60 4.09 1.49 2.17 1.39 1.02 4.67 1.28 4.87     33.40
  20th Century Average   2.89 2.26 2.61 2.47 2.84 2.57 1.61 1.51 1.80 1.88 2.49 2.63    24.93
  Percent of Average    111 248 138 166 52 84 86 68 259 68 196     134
  Rank: Dry to Wet (123 yrs)   79 122 100 119 9 54 59 40 122 38 118     121
  Rank: Wet to Dry (123 yrs)   44 2 24 5 115 70 65 84 2 86 6     3
    

Station Name:   Jan
2017
Feb
2017
Mar
2017
Apr
2017
May
2017
Jun
2017
Jul
2017
Aug
2017
Sep
2017
Oct
2017
Nov
2017
Dec
2017
  Total for
2017
 click on location   D0 D1                              
 for graph D2 D3 D4                              
Old Faithful None   2.88 7.27 2.16 2.04 0.92 2.25 1.55 0.50 5.50 1.62 5.47     32.16
  1981-2010 Normals    2.11 1.99 2.21 2.21 2.80 2.47 1.55 1.46 1.46 1.66 2.29 3.16    22.21
  Percent of Normal     136 365 98 92 33 91 100 34 377 98 239     145
Snowfall    47.0  68.0 18.0 20.0 4.0 0.0 0.0 0.0 4.0 8.5 45.5     215.0
1981-2010 Normals   37.5 31.1 26.8 19.3 7.3 1.2 0.0 0.0 1.4 7.7 31.7 43.8    164.0
  Percent of Normal     125 219 67 104 55 0 0 0 286 110 144     131
                               

Climate Division 2 - Snake Drainage
Climate Division:
Snake (Division Averages)
  Jan
2017
Feb
2017
Mar
2017
Apr
2017
May
2017
Jun
2017
Jul
2017
Aug
2017
Sep
2017
Oct
2017
Nov
2017
Dec
2017
  Total for
2017
  Average Temperature   12.2 24.2 32.5 33.3 43.2 51.5 60.5 56.7 47.6 35.0 27.7     38.6
  20th Century Average   14.7 18.3 23.6 33.0 42.3 50.0 57.7 56.0 47.5 37.4 24.3 16.0   36.8
  Departure from Avegage   -2.5 5.9 8.9 0.3 0.9 1.5 2.8 0.7 0.1 -2.4 3.4     1.8
  Rank: Warm to Cold (123 yrs)    95 11 2 57 48 37 12 49 66 100 24     12
  Rank: Cold to Warm (123 yrs)    28 113 122 67 76 87 112 75 58 24 100     112
  Precipitation    5.44 8.86 4.49 4.31 1.24 2.75 1.03 0.69 4.44 1.62 6.26     41.13
  20th Century Average   4.34 3.59 3.45 2.81 2.91 2.31 1.32 1.46 1.77 2.12 3.33 3.72    29.41
  Percent of Average   125 247 130 153 43 119 78 47 251 76 188     140
  Rank: Dry to Wet (123 yrs)   93 122 95 113 9 87 55 30 121 45 115     122
  Rank: Wet to Dry (123 yrs)   30 2 29 11 115 37 69 94 3 79 9     2
    

v v v0.63
Station Name:   Jan
2017
Feb
2017
Mar
2017
Apr
2017
May
2017
Jun
2017
Jul
2017
Aug
2017
Sep
2017
Oct
2017
Nov
2017
Dec
2017
  Total for
2017
 click on location   D0 D1                              
 for graph D2 D3 D4                              
Afton None   3.07 3.00 1.36 2.99 0.63 0.95 0.31 0.39 4.08 0.64 2.83     20.25
  1981-2010 Normals   1.40 1.09 1.40 1.54 2.26 1.97 1.43 1.25 1.63 2.04 1.25 1.46   16.91
  Percent of Normal    219 275 97 194 28 48 22 31 279 39 191     120
Snowfall    40.6 23.9 9.7 14.2 0.5 0.0 0.0 0.0 1.0 2.4 5.7     98.0
                               
Moose None   3.39 5.88 2.03 2.79 0.74 3.07 0.64 0.40 3.36 1.00 3.85     27.15
  1981-2010 Normals   2.58 1.82 1.62 1.49 1.88 1.61 1.29 1.29 1.44 1.47 2.64 2.67    19.13
  Percent of Normal    131 308 125 187 39 191 50 31 233 68 146     142
Snowfall    44.0  32.9 1.8 17.8 1.1 T 0.0 0.0 0.0 4.1 13.6      115.3
1981-2010 Normals   36.9 26.6 15.9 7.4 2.2 0.0 0.0 0.0 0.2 4.8 24.1 44.7    118.1
  Percent of Normal     119 114 11 241 2.2 0 0 0 0 85 56     98
                               
JHMR MId Mtn None                              
Snowfall    79.0 124.0 38.0 58.0 7.0 2.0     0.0 22.0 70.0      400.0
1975-2016 Average   83.0 65.0 55.0 20.0 13.0 2.0     1.0 16.0 33.0 77.0    288.0
  Percent of Normal     95 194 69  290 54 100     0 138 212     139
                               

Climate Division 3 - Green and Bear Drainages
v V V
Climate Division:
Green and Bear (Division Averages)
  Jan
2017
Feb
2017
Mar
2017
Apr
2017
May
2017
Jun
2017
Jul
2017
Aug
2017
Sep
2017
Oct
2017
Nov
2017
Dec
2017
  Total for
2017
  Average Temperature   13.8 24.9 35.7 37.6 48.0 58.6 66.3 62.1 52.4 39.2 33.4     42.9
  20th Century Average   16.2 19.7 27.0 37.0 46.6 55.3 62.8 60.8 51.6 40.7 27.0 18.3   40.4
  Departure from Avegage   -2.4 5.2 8.7 0.6 1.4 3.3 3.5 1.3 0.8 -1.5 6.4     2.5
  Rank: Warm to Cold (123 yrs)    96 19 4 55 42 19 8 35 51 92 4     9
  Rank: Cold to Warm (123 yrs)    27 105 120 69 82 105 116 89 73 32 120     115
  Precipitation    2.50 2.27 2.15 1.76 1.19 0.45 0.62 0.91 2.24 0.36 1.45     15.90
  20th Century Average   1.15 1.06 1.17 1.37 1.55 1,14 0.94 1.00 1.10 1.16 1.03 1.03    12.67
  Percent of Average    217 214 184 128 77 39 66 91 204 31 141     125
  Rank: Dry to Wet (123 yrs)   119 120 116 93 46 22 36 66 114 14 98     114
  Rank: Wet to Dry (123 yrs)   4 4 8 31 78 102 88 58 10 110 26     10
    

v v v
Station Name:   Jan
2017
Feb
2017
Mar
2017
Apr
2017
May
2017
Jun
2017
Jul
2017
Aug
2017
Sep
2017
Oct
2017
Nov
2017
Dec
2017
  Total for
2017
 click on location   D0 D1                              
 for graph D2 D3 D4                              
Big Piney Airport  None   0.99 0.75 1.45 1.17 1.10 0.14 0.86 0.64 1.72 0.01 0.25     9.08
1981-2010 Normals    0.31  0.35  0.44  0.53  0.84 0.79  0.71  0.69  0.78  0.53  0.21  0.30    6.18
Percent of Normal    319 214 330 221 131 18 121 93 221 2 119      147
                               
Evanston Airport None   1.08 1.18 0.77 0.31 1.82 0.25 0.10 0.01 T T 1.47     6.99
  1981-2010 Normals   0.54 0.61 0.86 1.15 1.77 1.24 0.90 0.96 1.31 1.17 1.04 0.58    11.55
  Percent of Normal     200 193 90 27 103 20 11 1 0 0 141     61
                               
Rock Springs Arpt.  None   0.49 0.41  1.43 0.55 0.64 0.02 0.14 0.70 0.77 0.02 0.29     5.46
 1981-2010 Normals    0.45  0.48  0.68  0.91  1.21  0.79  0.64  0.62  0.92  0.87  0.49  0.50    8.06
  Percent of Normal     109 85  210 60 53 3 22 113 84 2 59      68
                               
Bitter Creek 4NE D0   0.66 0.57  1.46 0.33 0.84 0.04 0.16 0.98 1.07 0.04 0.50     6.65
  1981-2010 Normals   0.28 0.36 0.30 0.65 1.09 0.70 0.60 0.75 0.73 0.66 0.31 0.51    6.43
  Percent of Normal     236 158  487 51 77 6 27 131 147 6 161     103
                               
Fossil Butte
National Monument
  None    3.25 2.50  2.76 2.16 0.69 0.59 0.02 1.40 3.22 0.50 1.89     18.98
1981-2010 Normals   0.49 0.68 0.82 0.98 1.41 1.03 0.85 0.93 1.10 1.11 0.86 0.74    10.26
  Percent of Normal    663 368  337 220 49 57 2 151 293 45 220     185
Snowfall    33.6 29.5  6.5 8.2 2.9 T 0.0 0.0 T 1.7 8.5      92.4
                               
Green River None   2.78 2.91  1.75 2.06 1.33 0.17 0.28 1.10 1.70 0.07 0.80     14.23
  1981-2010 Normals    0.34  0.43 0.71  0.85 1.23 0.98 0.55  0.68  0.90 0.81 0.41 0.44    7.89
  Percent of Normal   818 509  246 242 1.08 17 51 162 189 9 195    

180

Snowfall   30.0 23.8  1.3 3.0 5.0 0.0 0.0 0.0 T T 4.5      67.6
1981-2010 Normals   4.6 7.3 5.0 3.9 0.6 0.0 0.0 0.0 0.0 0.5 3.8 6.5   25.7
Percent of Normal   652 326 26 77 833 0 0 0 0 0 118      263
                               
Rock Springs  None   1.98 1.83  1.91 1.08 0.87 0.26 0.82 0.98 0,94 0.10 0.65     11.42
  1981-2010 Normals    0.44  0.46 0.67  0.91 1.42 0.86 0.73  0.96  1.08 1.09 0.52 0.52    9.14
  Percent of Normal    450 398  285 119 61 30 112 102 87 9 125     125
Snowfall   19.2 22.0 T 0.0 4.0 0.0 0.0 0.0 0.0 T 1.1      46.3
                               

Climate Division 4 - Big Horn Drainage
Climate Division:
Big Horn (Division Averages)
  Jan
2017
Feb
2017
Mar
2017
Apr
2017
May
2017
Jun
2017
Jul
2017
Aug
2017
Sep
2017
Oct
2017
Nov
2017
Dec
2017
  Total for
2017
  Average Temperature   15.5 27.6 39.4 41.1 50.6 60.2 69.5 64.1 53.8 41.2 33.9     45.2
  20th Century Average   17.7 22.7 30.2 39.8 49.1 58.1 65.8 63.7 53.5 42.6 29.2 20.6   42.9
  Departure from Avegage   -2.2 4.9 9.2 1.3 1.5 2.1 3.7 0.4 0.3 -1.4 4.7     2.2
  Rank: Warm to Cold (123 yrs)    90 25 4 45 39 33 8 57 66 85 16     14
  Rank: Cold to Warm (123 yrs)    33 99 120 79 85 91 116 67 58 39 108     110
  Precipitation   1.20 1.65 1.98 3.57 1.60 1.28 0.75 0.70 2.94 0.79 1.41     17.87
  20th Century Average   0.92 0.75 1.12 1.75 2.22 1.92 1.13 0.94 1.31 1.14 0.95 0.87   14.15
  Percent of Average   130 220 177 204 72 67 66 74 224 69 148     126
  Rank: Dry to Wet (123 yrs)   99 119 114 120 36 40 47 50 116 41 103     115
  Rank: Wet to Dry (123 yrs)   24 5 10 4 88 84 77 74 8 83 21     9
    

v V
Station Name:   Jan
2017
Feb
2017
Mar
2017
Apr
2017
May
2017
Jun
2017
Jul
2017
Aug
2017
Sep
2017
Oct
2017
Nov
2017
Dec
2017
  Total for
2017
 click on location   D0 D1                              
 for graph D2 D3 D4                              
Greybull Airport   None   0.11 0.10 0.30 0.51 0.52 0.28 0.09 0.07 2.00 T 0.21     4.19
  1981-2010 Normals    0.23  0.18  0.40  0.71  1.65  1.20  0.66  0.42  0.88  0.30  0.28  0.60    7.23
  Percent of Normal     48 56 75 72 32 23 14 17 227 0 70     58
                               
Worland Airport None   0.20 0.20 0.98 2.50 0.92 0.36 0.16 0.18 2.07 0.23 0.68     8.48
  1981-2010 Normals    0.23 0.19 0.46 0.86 1.42 1.15 0.71 0.43 0.85 0.69 0.35 0.23    7.34
  Percent of Normal     87 105 213 291 65 31 23 42 244 33 194     116
                               
Cody  None   1.03 0.81 0.36 3.13 1.62 1.16 1.01 0.53 2.76 0.59 1.04     14.04
  1981-2010 Normals   0.33 0.33 0.56 1.06 1.82 1.68 1.11 0.91 1.06 0.89 0.48 0.33    10.23
  Percent of Normal     312 245 64 295 89 69 91 58 260 66 217      137
Snowfall    15.0 12.5 T T 0.0 0.0 T 0.0 0.0 1.0 6.6     35.1
1981-2010 Normals   7.8 6.7 6.9 6.3 0.8 0.0 0.0 0.0 0.2 4.3 6.3 8.0   39.3
  Percent of Normal     192 187 0 0 0 0 0 0 0 23 105     89
                               
Powell Field Station   None   0.29 0.47 0.42 1.70 0.78 0.92 0.37 0.13 1.82 0.01 0.25     7.16
  1981-2010 Normals   0.21 0.13 0.29 0.51 1.40 1.35 0.87 0.52  0.65 0.56 0.18 0.13    6.67
  Percent of Normal     138 362 145 333 56 68 43 25 280 2 139     107
Snowfall    8.0 6.0 1.0 0.0 0.0 0.0 0.0 0.0 0,0 0.0 0.8     15.8
1981-2010 Normals   2.3 0.5 2.5 0.5 0.5 0.0 0.0 0.0 0.1  1.2 1.3 1.2   8.9
  Percent of Normal     348  1200 40 0 0 0 0 0 0 0 62      178
                               
Thermopolis   None   0.50 0.41 3.41 5.02 1.63 0.85 0.52 0.29 2.62 0.70 0.65     16.60
  1981-2010 Normals   0.35 0.45 0.87 1.46 1.86 1.51 0.88 0.58 1.23 1.26 0.80 0.46    11.25
  Percent of Normal     143 91 392 344 88 56 59 50 213 56 81     148
Snowfall   12.0 10.0 T 0.0 0.0 0.0 0.0 0.0 0.0 0.0 8.0      30.0
1981-2010 Normals   5.6  4.6 2.5 2.8 0.4 0.0 0.0 0.0 0.2 2.4 3.7 4.5   22.2
  Percent of Normal     214 217 0 0 0 0 0 0 0 0 216     135

Climate Division 5 - Powder and Tongue Drainages
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Climate Division:
Powder and Tongue
(Division Averages)
  Jan
2017
Feb
2017
Mar
2017
Apr
2017
May
2017
Jun
2017
Jul
2017
Aug
2017
Sep
2017
Oct
2017
Nov
2017
Dec
2017
  Total for
2017
  Average Temperature   17.6 29.6 40.4 42.6 51.6 62.2 72.7 66.2 56.0 43.3 35.2     47.0
  20th Century Average   19.6 23.8 31.1 41.2 50.8 60.2 68.2 66.5 55.9 44.6 31.1 22.4   44.8
  Departure from Avegage   -2.0 5.8 9.3 1.4 0.8 2.0 4.5 -0.3 0.1 -1.3 4.1     2.2
  Rank: Warm to Cold (123 yrs)   89 23 4 46 51 36 8 72 69 83 27     16
  Rank: Cold to Warm (123 yrs)   34 101 120 78 73 88 116 52 55 41 97     108
  Precipitation   0.55 0.57 1.51 4.08 1.80 1.65 0.80 0.74 1.65 0.79 0.78     14.92
  20th Century Average   0.63 0.61 1.05 1.85 2.54 2.35 1.40 0.99 1.28 1.16 0.77 0.65   14.63
  Percent of Average    87 93 144 221 71 70 57 75 129 68 101     102
  Rank: Dry to Wet (123 yrs)   59 65 101 121 28 37 23 49 91 41 73     68
  Rank: Wet to Dry (123 yrs)   64 62 23 3 96 87 101 75 33 83 51     56
    

v v2.021.99 V
Station Name:   Jan
2017
Feb
2017
Mar
2017
Apr
2017
May
2017
Jun
2017
Jul
2017
Aug
2017
Sep
2017
Oct
2017
Nov
2017
Dec
2017
  Total for
2017
 click on location   D0 D1                              
 for graph D2 D3 D4                              
Buffalo Airport None    0.10  0.33 2.02 3.18 2.65 1.70 1.41 0.51 1.79 0.27 0.61     14.57
1981-2010 Normals    0.42  0.35  0.92  1.30  2.53  2.28  1.66  0.81  1.31  0.93  0.54  0.40   13.05
  Percent of Normal     24  94 220 245 105 75 85 63 137 29 113      112
                               
Sheridan Arpt None   1.04 0.66 3.43 4.60 2.24 1.11 0.38 0.43 1.89 0.34 1.54     17.66
  1981-2010 Normals    0.56  0.54  0.98  1.60  2.35 2.12  1.18  0.72  1.43  1.41  0.71  0.56   13.05
  Percent of Normal     186  122 350 288 99 52 32 60 132 24 217      130
                               
Kaycee None   0.32 0.54 0.83 5.09 2.34 0.70 0.12 0.37 0.62 1.34 0.76     13.03
  1981-2010 Normals   0.30 0.34 0.74 1.46 2.37 1.84 1.42 0.80 1.18 1.04 0.57 0.31    12.06
  Percent of Normal     107 159 112 349 95 38 8 46 53 129 133      108
Snowfall    6.1 10.3 8.0 3.0 0.5 0.0 0.0 0.0 0.0 1.0 7.5     36.4
1981-2010 Normals   5.9 6.3 8.0 4.7 0.6 0.1 0.0 0.0 0.2 1.5 4.2 6.0   31.5
  Percent of Normal     103  163 100 64 83 0 0 0 0 67 179     116
                               

Climate Division 6 - Belle Fourche Drainage
V
Climate Division:
Belle Fourche (Division Averages)
  Jan
2017
Feb
2017
Mar
2017
Apr
2017
May
2017
Jun
2017
Jul
2017
Aug
2017
Sep
2017
Oct
2017
Nov
2017
Dec
2017
  Total for
2017
  Average Temperature   17.3 29.7 40.0 42.8 51.7 63.2 74.1 66.0 56.8 43.9 35.2     47.3
  20th Century Average   19.0 23.1 30.6 41.4 51.3 60.9 68.8 67.0 56.4 45.0 31.0 22.1   45.0
  Departure from Avegage   -1.7 6.6 9.4 1.4 0.4 2.3 5.3 -1.0 0.4 -1.1 4.2     2.4
  Rank: Warm to Cold (123 yrs)   82 15 6 45 55 32 7 80 60 81 25     16
  Rank: Cold to Warm (123 yrs)   41 109 118 79 69 92 117 44 64 43 99     108
  Precipitation   0.70 0.39 0.68 3.08 1.69 2.19 1.89 1.37 2.12 0.88 0.63     15.62
  20th Century Average   0.59 0.59 0.98 1.75 2.66 2.83 1.84 1.33 1.32 1.14 0.69 0.64    15.72
  Percent of Average    119 66 69 176 64 77 103 103 161 77 91     99
  Rank: Dry to Wet (123 yrs)   90 34 36 116 32 48 47 73 108 69 67     66
  Rank: Wet to Dry (123 yrs)   33 90 88 8 92 76 77 51 21 55 57     58
    

Station Name:   Jan
2017
Feb
2017
Mar
2017
Apr
2017
May
2017
Jun
2017
Jul
2017
Aug
2017
Sep
2017
Oct
2017
Nov
2017
Dec
2017
  Total for
2017
 click on location   D0 D1                              
 for graph D2 D3 D4                              
Gillette Airport None   0.54 0.30 0.79 4.31 1.25 1.90 0.64 0.42 1.58 1.12 0.49     13.34
1981-2010 Normals    0.39 0.39  0.96  1.47  2.45 2.21  1.66  0.95  1.19  1.27  0.55  0.40    13.49
  Percent of Normal     138 77 82 293 51 86 39 44 133 88 89     99
                               

Climate Division 7 - Cheyenne and Niobrara Drainages
Climate Division: Cheyenne and Niobrara
(Division Averages)
  Jan
2017
Feb
2017
Mar
2017
Apr
2017
May
2017
Jun
2017
Jul
2017
Aug
2017
Sep
2017
Oct
2017
Nov
2017
Dec
2017
  Total for
2017
  Average Temperature   19.0 30.7 40.8 43.9 52.3 64.2 74.0 66.8 58.5 44.6 37.0     48.8
  20th Century Average   20.3 24.6 32.1 42.5 52.4 62.5 70.3 68.4 57.6 45.9 31.8 23.0   46.2
  Departure from Avegage   -1.3 6.1 8.7 1.4 -0.1 1.7 3.7 -1.6 0.9 -1.3 5.2     2.1
  Rank: Warm to Cold (123 yrs)   80 18 5 46 58 41 12 90 55 84 15     17
  Rank: Cold to Warm (123 yrs)   43 106 119 78 66 83 112 34 79 40 109     107
  Precipitation   0.53 1.03 0.79 2.70 2.11 1.50 1.82 1.17 1.35 0.65 0.44     14.09
  20th Century Average   0.42 0.46 0.76 1.68 2.53 2.34 1.78 1.21 1.14 0.95 0.55 0.48   13.82
  Percent of Average    126 224 104 161 83 64 102 97 118 68 80     102
  Rank: Dry to Wet (123 yrs)   89 119 71 108 51 37 47 63 82 46 52     68
  Rank: Wet to Dry (123 yrs)   34 5 53 16 73 87 77 61 42 78 72     56
    

Climate Division 8 - Lower Platte Drainage
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Climate Division:
Lower Platte (Division Averages)
  Jan
2017
Feb
2017
Mar
2017
Apr
2017
May
2017
Jun
2017
Jul
2017
Aug
2017
Sep
2017
Oct
2017
Nov
2017
Dec
2017
  Total for
2017
  Average Temperature   23.0 32.3 41.7 43.2 51.1 62.8 71.6 65.6 57.8 44.0 39.6     48.4
  20th Century Average   22.8 25.9 32.1 41.2 50.8 60.7 68.0 66.2 56.4 45.2 32.3 24.7   45.6
  Departure from Avegage   0.2 6.4 9.6 2.0 0.3 2.1 3.6 -0.6 1.4 -1.2 7.3     2.8
  Rank: Warm to Cold (123 yrs)   68 9 3 38 60 34 12 76 46 88 4     8
  Rank: Cold to Warm (123 yrs)    55 115 121 86 64 90 112 48 78 36 120     116
  Precipitation   0.85 1.09 1.37 2.39 3.00 0.70 1.06 1.23 1.37 0.84 0.54     14.44
  20th Century Average   0.51 0.59 0.97 1.90 2.55 2.05 1.58 1.17 1.21 1.05 0.68 0.63   14.26
  Percent of Average   167 185 141 126 118 34 67 105 113 80 79     101
  Rank: Dry to Wet (123 yrs)   107 114 99 91 88 10 25 73 85 48 50     70
  Rank: Wet to Dry (123 yrs)   16 10 25 33 36 114 99 51 39 76 74     54
    

Station Name:   Jan
2017
Feb
2017
Mar
2017
Apr
2017
May
2017
Jun
2017
Jul
2017
Aug
2017
Sep
2017
Oct
2017
Nov
2017
Dec
2017
  Total for
2017
 click on location   D0 D1                              
 for graph D2 D3 D4                              
Casper Airport   None   0.54 0.81 1.79 2.21 2.25 1.01 0.37 0.94 1.42 1.08 0.31     12.73
1981-2010 Normals    0.51 0.57  0.82  1.29  2.02  1.61  1.41  0.85  1.08  1.11  0.76  0.49    12.03
  Percent of Normal     106 142 218 171 111 63 26 111 131 97 41      106
Snowfall   13.8  14.3 6.4 5.8 2.9 0.0 0.0 0.0 T 5.6 3.6     52.4
1981-2010 Normals   9.1 9.8 10.9 11.6 2.9 0.1 0.0 0.0 1.8 7.4 10.3 11.0   63.9
  Percent of Normal     152 146 59 50 100 0 0 0 0 76 35      82
                               
Cheyenne Arpt None   0.77 0.61 0.73 2.57 3.89 0.67 0.53 2.11 1.08 1.13 0.44     14.53
  1981-2010 Normals    0.33  0.47  1.05  1.78  2.34  2.34  2.19 1.95  1.48  0.93  0.59  0.49   15.45
  Percent of Normal     233 130 70 144 2.34 29 24 108 73 122 75      94
Snowfall    13.1 8.3 0.1 8.7 14.7 0.0 T T T 8.0 4.2     57.1
1981-2010 Normals   5.9 7.9 11.3 10.2 2.3 0.0 0.0 0.0 1.3 5.0  8.0 8.4    51.9
  Percent of Normal     222 105 1 85 639 0 0 0 0 160 53     110
                               

Climate Division 9 - Wind River Drainage
Climate Division:
Wind River (Division Averages)
  Jan
2017
Feb
2017
Mar
2017
Apr
2017
May
2017
Jun
2017
Jul
2017
Aug
2017
Sep
2017
Oct
2017
Nov
2017
Dec
2017
  Total for
2017
  Average Temperature   14.1 25.8 38.0 39.1 48.6 58.7 67.6 62.9 52.7 40.2 33.6     43.8
  20th Century Average   17.3 22.0 29.0 38.3 48.0 57.0 64.7 62.8 52.9 41.8 27.9 19.5   42.0
  Departure from Avegage   -3.2 3.8 9.0 0.8 0.6 1.7 2.9 0.1 -0.2 -1.6 5.7     1.8
  Rank: Warm to Cold (123 yrs)    101 29 4 51 57 38 15 64 75 88 12     20
  Rank: Cold to Warm (123 yrs)   22 95 120 73 67 86 109 62 49 36 112     104
  Precipitation   1.84 2.46 3.16 3.31 1.82 1.00 0.55 0.96 2.74 0.92 1.67     20.43
  20th Century Average   0.93 0.81 1.26 1.89 2.25 1.67 1.04 0.88 1.19 1.20 0.96 0.84   14.08
  Percent of Average    198 304 251 175 81 60 53 109 230 77 174     145
  Rank: Dry to Wet (123 yrs)   113 120 121 115 47 44 33 81 115 49 111     123
  Rank: Wet to Dry (123 yrs)   10 4 3 9 77 80 91 43 9 75 13     1
    

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Station Name:   Jan
2017
Feb
2017
Mar
2017
Apr
2017
May
2017
Jun
2017
Jul
2017
Aug
2017
Sep
2017
Oct
2017
Nov
2017
Dec
2017
  Total for
2017
 click on location   D0 D1                              
 for graph D2 D3 D4                              
Lander Airport None   1.27 1.11 4.65 3.26 2.20 0.26 0.43 1.14e 1.84e 1.07 0.45     17.68e
  1981-2010 Normals    0.41  0.58  1.16  1.87  2.20  1.27  0.78 0.61  1.05  1.29  0.86  0.58   12.08
  Percent of Normal     310 191 401 174 100 20 55 187 175 83 52      146
Snowfall    18.3 19.6 5.7 17.4 6.8 0.0 0.0 0.0 0.0 4.5 3.5     75.8
1981-2010 Normals   7.6 10.3 16.1 16.8 4.8 0.1 0.0 0.0 2.7 9.8  13.1 10.1    81.3
  Percent of Normal     241 190 35 104 142 0 0 0 0 46 27     93
                               
Riverton Airport  None   1.01 0.85 3.71 3.19 1.40 0.20 0.15 0.94 1.73 0.61 0.54     14.33
  1981-2010 Normals    0.24  0.27  0.55  1.30  1.72  1.28  0.89  0.57  0.90  0.89  0.50  0.32   9.11
  Percent of Normal     421 315 675 245 81 16 17 165 192 69 108     157
Snowfall    16.4 14.3 T 14.5 4.2 0.0 0.0 0.0 T 2.7 4.6     56.7
                               
Dubois  None   0.84 2.06 1.84 1.02 1.13 1.59 1.09 1.32 4.10 0.95 1.70     17.64
  1981-2010 Normals   0.24 0.38 0.40 1.10 1.64 1.28 1.11 0.86 1.24 0.81 0.57 0.28    9.63
  Percent of Normal     350 542 460 93 69 124 98 153 331 117 298       183
Snowfall    19.5 39.0 8.2 7.0 2.5 0.0 0.0 0.0 1.5 13.0 17.1     107.8
1981-2010 Normals   3.9 5.7 6.0 8.5 3.9 0.6 0.0 0.0 2.6 3.0 5.8 5.1   40.0
  Percent of Normal     500 684 137 82 64 0 0 0 58 433 295     270
                               
Riverton  None   1.12 0.96 2.45 4.70 1.34 0.49 0.37 1.09 1.71 0.53 0.44     15.20
  1981-2010 Normals   0.28 0.33 0.56 0.98 1.45 1.21 0.78 0.50 0.83 0.85 0.41 0.24    8.18
  Percent of Normal     400 291 438 480 92 40 47 218 206 62 107       186
Snowfall    16.8 15.1 T 20.9 2.2 T 0.0 T 0.0 1.3 3.6     59.9
1981-2010 Normals    4.8  6.0  5.9  6.1 1.2 0.0 0.0 0.0 0.3 3.7 4.3 4.8   32.3
  Percent of Normal     350 252 0 343 183 0 0 0 0 35 84     185

Climate Division 10 - Upper Platte Drainage
Climate Division:
Upper Platte (Division Averages)
  Jan
2017
Feb
2017
Mar
2017
Apr
2017
May
2017
Jun
2017
Jul
2017
Aug
2017
Sep
2017
Oct
2017
Nov
2017
Dec
2017
  Total for
2017
  Average Temperature   17.6 27.8 38.2 39.1 47.9 59.9 67.6 62.7 53.5 40.1 36.3     43.2
  20th Century Average   18.3 21.7 28.0 37.5 47.4 57.1 64.5 62.6 52.9 41.8 28.3 20.2   40.0
  Departure from Avegage   -0.7 6.1 10.2 1.6 0.5 2.8 3.1 0.1 0.6 -1.7 8.0     3.2
  Rank: Warm to Cold (123 yrs)   81 14 1 45 63 24 13 61 56 91 4     6
  Rank: Cold to Warm (123 yrs)   42 110 123 79 62 100 111 63 68 33 120     117
  Precipitation   1.60 1.37 1.07 1.73 1.76 0.35 1.02 0.88 1.60 0.68 0.88     12.94
  20th Century Average   0.80 0.83 1.06 1.58 1.78 1.27 1.10 0.93 1.08 1,09 0.83 0.82   12.37
  Percent of Average    200 165 101 109 99 28 93 94 148 62 106     105
  Rank: Dry to Wet (123 yrs)   119 116 52 45 56 12 62 63 103 36 72     81
  Rank: Wet to Dry (123 yrs)   4 8 72 79 68 112 62 61 21 88 52     43
    

Station Name:   Jan
2017
Feb
2017
Mar
2017
Apr
2017
May
2017
Jun
2017
Jul
2017
Aug
2017
Sep
2017
Oct
2017
Nov
2017
Dec
2017
  Total for
2017
 click on location   D0 D1                              
 for graph D2 D3 D4                              
Jeffrey City  None   0.84 1.51 0.98 1.80 1.37 0.22 0.73 0.35 1.58 0.22 0.26     9.89
  1981-2010 Normals    0.31  0.41 0.86  1.27 1.85 1.15 0.89  0.60  0.80 0.91 0.59 0.42    9.64
  Percent of Normal    271 368 114 142 74 19 82 58 198 24 24     103
Snowfall   14.0 18.0 1.0 14.0 11.0 0.0 0.0 0.0 T 4.0 1.0     63.0
1981-2010 Normals   4.6 6.7 9.4 10.2 4.9 0.4 0.0 0.0 1.4 7.3 6.6 5.5    51.5
  Percent of Normal    304 269 11 137 224 0 0 0 0 55 15      122

2016-17
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Previous Annual and Water Year Climate Summaries
Wyoming Climate      |      Click on Image to Enlarge
Statewide averages and ranks for periods including December 2017 will be available on January 8, 2018*
* 2017-18 Climate Monitoring Release Dates

Wyoming: Last 3 Months

Precipitation - Percent of Normal Temperature - Departure from Normal
Wyoming: Last Three Months Percent of Normal Precipitation Wyoming: Last 3 Months Departure from Normal Temperature
 Statewide Average (inches) 4.42  Statewide Average (°F) 43.3
 20th Century Average 3.47  20th Century Average 41.7
 Rank - Driest  to Wettest  (123 Years) 102  Rank - Warmest  to Coldest (123 Years) 27
 Rank - Wettest to Driest (123 Years) 22  Rank - Coldest to Warmest (123 Years) 97
 Driest Period on Record: Sep - Nov 1952 1/06  Warmest Period on Record:  Sep - Nov 1963 46.9
 Wettest Period on Record: Sep - Nov 2013 5.97  Coldest Period on Record: Sep - Nov 1985 36.5

 

Wyoming: Last 12 Months

Precipitation - Percent of Normal Temperature - Departure from Normal
Wyoming: Current Year Percent of Normal Precipitation Wyoming: Current Year Departure from Normal Temperature
 Statewide Average (inches) 19.40  Statewide Average (°F) 42.6
 20th Century Average 15.94  20th Century Average 40.8
 Rank - Driest  to Wettest  (123 Years) 116  Rank - Warmest  to Coldest (123 Years) 21
 Rank - Wettest to Driest (123 Years) 7  Rank - Coldest to Warmest (123 Years) 102
 Driest Period on Record: Dec 2011 - Nov 2012 10.61  Warmest Period on Record:  Dec 1933 - Nov 1934 45.0

 Wettest Period on Record: Dec 1926 - Nov 1927

 20.23  Coldest Period on Record: Dec 1916 - Nov 1917 37.6

Last 5 Years (December 2012 - November 2017)

Precipitation - Percent of Normal Temperature - Departure from Normal
Map Not Available For This Period Map Not Available For This Period
 Statewide Average (inches) 87.18  Statewide Average (°F) 43.0
 20th Century Average 79.56  20th Century Average  40.7
 Rank - Driest  to Wettest  (118 Periods) 105  Rank - Warmest  to Coldest (118 Periods) 3
 Rank - Wettest to Driest  (118 Periods) 14  Rank - Coldest to Warmest (118 Periods) 116
 Driest Period on Record: Dec 1930 - Nov 1935 66.95  Warmest Period on Record: Dec 2011 - Nov 2016 43.4
 Wettest Period on Record: Dec 1994 - Nov 1999 91.08  Coldest Period on Record: Dec 1912 -  Nov 1917 39.3