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Wyoming Climate      |      Click on Image to Enlarge
Statewide averages and ranks for periods including March 2019 will be available on April 8, 2019*
* 2019 Climate Monitoring Release Dates

Wyoming: February 2019

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) 1.35  Statewide Average (°F) 17.4
 20th Century Average 0.97  20th Century Average 22.3
 Rank - Driest  to Wettest  (125 Years) 113 Rank - Warmest  to Coldest (125 Years) 104
 Rank - Wettest to Driest  (125 Years) 13  Rank - Coldest to Warmest (125 Years) 22
 Driest Month on Record:  February 1970, 1977 0.39   Warmest Month on Record: February 1954 32.0
 Wettest Year on Record: February 1899, 1986 2.29   Coldest Month on Record: February 1899 9.1

Wyoming: Water Year 2018-19 (October - September)

Precipitation - Percent of Normal Temperature - Departure from Normal
Wyoming: Water Year 2018-19 Percent of Normal Precipitation (Click to Enlarge) Wyoming: Water Year 201819 Departure from Normal Temperature
Climate Division:
Wyoming (Statewide Averages)
  Oct
2018
Nov
2018
Dec
2018
  Jan
2019
Feb
2019
Mar
2019
Apr
2019
May
2019
Jun
2019
Jul
2019
Aug
2019
Sep
2019
  Total for
WY2018-19
  Average Temperature   41.0 28.5 21.4   22.4 17.4                 26.1
  20th Century Average   42.5 29.0 20.6   18.4 22.3 29.1 38.8 48.4 57.6 65.3 63.4 53.6   26.6
  Departure from Average   -1.5 -0.5 0.8   4.0 -4.9                 -0.5
  Rank: Warm to Cold (125 yrs)   92 76 57   28 104                 84
  Rank: Cold to Warm (125 yrs)   33 49 68   98 22                 41
  Precipitation   1.29 1.32 0.77   0.91 1.35                 5.64
  20th Century Average   1.20 1.03 1.01   1.06 0.97 1.25 1.77 2.21 1.84 1.28 1.07 1.24   5.27
  Percent of Average   108 126 76   86 139                 107
  Rank: Dry to Wet (125 yrs)   73 91 34   49 113                 82
  Rank: Wet to Dry (125 yrs)   52 34 91   77 13                 43
    
Maps and Statewide Averages for 3, 12 and 60 Months

Wyoming Climate Divisions: 2019

Wyoming Climate Divisions Map - Click to Enlarge

Climate Division 1 - Yellowstone Drainage
Climate Division:
Yellowstone (Division Averages)
  Oct
2018
Nov
2018
Dec
2018
  Jan
2019
Feb
2019
Mar
2019
Apr
2019
May
2019
Jun
2019
Jul
2019
Aug
2019
Sep
2019
  Total for
WY2018-19
  Average Temperature   37.0 23.7 18.1   20.5 15.5                 23.0
  20th Century Average   37.3 24.6 16.9   15.2 18.9 24.3 33.3 42.4 50.3 57.9 56.2 47.4   22.6
  Departure from average   -0.3 -0.9 1.2   5.3 -3.4                 0.4
  Rank: Warm to Cold (125 yrs)   73 78 48   16 98                 63
  Rank: Cold to Warm (125 yrs)   52 47 77   110 28                 62
  Precipitation   1.97 3.07 1.76   2.30 5.15                 14.25
  20th Century Average   1.88 2.49 2.63   2.89 2.26 2.61 2.47 2.84 2.57 1.61 1.51 1.80    12.15
  Percent of Average   105 123 67   80 228                 117
  Rank: Dry to Wet (125 yrs)   68 87 27   47 122                 89
  Rank: Wet to Dry (125 yrs)   57 38 98   79 4                 36
    

Station Name:   Oct
2018
Nov
2018
Dec
2018
  Jan
2019
Feb
2019
Mar
2019
Apr
2019
May
2019
Jun
2019
Jul
2019
Aug
2019
Sep
2019
  Total for
2018
 click on location   D0 D1                                
 for graph D2 D3 D4                                
Old Faithful None   2.11 1.49 1.05   1.78 6.40                 12.83
  1981-2010 Normals   1.66 2.29 3.16   2.11 1.99 2.21 2.21 2.80 2.47 1.55 1.46 1.46    11.21
  Percent of Normal    127 65 33   84 322                 114
Snowfall   7.1 23.0 22.0   29.3 91.0                 172.4
1981-2010 Normals   7.7 31.7 43.8   37.5 31.1 26.8 19.3 7.3 1.2 0.0 0.0 1.4    151.8
  Percent of Normal    92 73 50   78 293                 114
                                 

Climate Division 2 - Snake Drainage
Climate Division:
Snake (Division Averages)
  Oct
2018
Nov
2018
Dec
2018
  Jan
2019
Feb
2019
Mar
2019
Apr
2019
May
2019
Jun
2019
Jul
2019
Aug
2019
Sep
2019
  Total for
WY2018-19
  Average Temperature   37.2 23.4 16.2   18.1 16.5                 22.3
  20th Century Average   37.4 24.3 16.0   14.7 18.3 23.6 33.0 42.3 50.0 57.7 56.0 47.5   22.1
  Departure from average   -0.2 -0.9 0.2   3.4 -1.8                 0.2
  Rank: Warm to Cold (125 yrs)   67 76 60   35 89                 57
  Rank: Cold to Warm (125 yrs)   58 49 65   91 37                 68
  Precipitation   2.22 4.16 2.22   3.07 7.64                 19.31
  20th Century Average   2.12 3.33 3.72   4.34 3.59 3.45 2.81 2.91 2.31 1.32 1.46 1.77    17.10
  Percent of Average   105 125 60   71 213                 113
  Rank: Dry to Wet (125 yrs)   68 86 27   33 122                 91
  Rank: Wet to Dry (125 yrs)   57 39 98   93 4                 34
   

v
Station Name:   Oct
2018
Nov
2018
Dec
2018
  Jan
2019
Feb
2019
Mar
2019
Apr
2019
May
2019
Jun
2019
Jul
2019
Aug
2019
Sep
2019
  Total for
WY2018-19
 click on location   D0 D1                                
 for graph D2 D3 D4                                
Afton D0   1.93 1.84 1.31   1.61 2.08                 8.77
  1981-2010 Normals   1.63 1.48 1.25   1.40 1.09 1.40 1.54 2.26 1.97 1.43 1.25 1.46   6.85
  Percent of Normal    118 124 105   115 191                 128
Snowfall   T 13.5 19.0   17.9 22.1                 72.5
                                 
Moose None   1.08 2.82 1.21   1.56 7.83                 14.50
  1981-2010 Normals   1.47 2.64 2.67   2.58 1.82 1.62 1.49 1.88 1.61 1.29 1.29 1.44    11.18
  Percent of Normal    73 107 45   60 430                 130
Snowfall   T 27.0 9.2   M 79.2                  115.4*
1981-2010 Normals   4.8 24.1 44.7   36.9 26.6 15.9 7.4 2.2 0.0 0.0 0.0 0.2    137.1
  Percent of Normal    0 112 21   M 298                 84*
                                *Missing Data
JHMR MId Mtn None                                
Snowfall   9.0 52.0 62.0   72.0 167.0                 364.0
1975-2018 Average   16.0 34.0 76.0   82.0 65.0 56.0 21.0 13.0 2.0 0.0 0.0 1.0    276.0
  Percent of Normal    56 153 82    88 246                 132
                                 

Climate Division 3 - Green and Bear Drainages
Climate Division:
Green and Bear (Division Averages)
  Oct
2018
Nov
2018
Dec
2018
  Jan
2019
Feb
2019
Mar
2019
Apr
2019
May
2019
Jun
2019
Jul
2019
Aug
2019
Sep
2019
  Total for
WY2018-19
  Average Temperature   39.9 26.7 16.8   17.5 15.8                 23.3
  20th Century Average   40.7 27.0 18.3   16.2 19.7 27.0 37.0 46.6 55.3 62.8 60.8 51.6   24.4
  Departure from average   -0.8 -0.3 -1.5   1.3 -3.9                 -1.1
  Rank: Warm to Cold (125 yrs)   84 70 81   54 99                 96
  Rank: Cold to Warm (125 yrs)   41 55 44   72 27                 29
  Precipitation   1.79 1.23 0.70   1.09 1.49                 6.30
  20th Century Average   1.16 1.03 1.03   1.15 1.06 1.17 1.37 1.55 1.14 0.94 1.00 1.10    5.43
  Percent of Average   154 119 68   95 141                 116
  Rank: Dry to Wet (125 yrs)   105 81 32   70 106                 93
  Rank: Wet to Dry (125 yrs)   20 44 93   56 20                 32
    

v v v
Station Name:   Oct
2018
Nov
2018
Dec
2018
  Jan
2019
Feb
2019
Mar
2019
Apr
2019
May
2019
Jun
2019
Jul
2019
Aug
2019
Sep
2019
  Total for
WY2018-19
 click on location   D0 D1                                
 for graph D2 D3 D4                                
Big Piney Airport  D0   0.59 0.08 0.10   0.11 0.05                 0.93
1981-2010 Normals    0.53 0.21 0.30   0.31 0.35 0.44  0.53  0.84  0.79  0.71  0.69  0.78    1.70
Percent of Normal    111 38 33   35 14                 55
                                 
Evanston Airport D1   2.18 0.64 0.36   0.41 0.23                 3.82
  1981-2010 Normals   1.17 1.04 0.58   0.54 0.61 0.86 1.15 1.77 1.24 0.90 0.96 1.31   3.94
  Percent of Normal    186 62 62   76 38                 97
                                 
Rock Springs Arpt. D0   1.05 0.25 0.12   0.24 0.14                 1.80
 1981-2010 Normals    0.87  0.49  0.50    0.45  0.48  0.68  0.91  1.21  0.79  0.64  0.62  0.92    2.79
  Percent of Normal    121 51 24   53 29                  65
                                 
Bitter Creek 4NE D0   1.11 0.47 0.31   0.23 0.50                 2.62
  1981-2010 Normals   0.66 0.31 0.51   0.28 0.36 0.30 0.65 1.09 0.70 0.60 0.75 0.73    2.12
  Percent of Normal    1.68 152 61   82 139                 124
                                 
Fossil Butte N.M.   D1   1.96 1.24 0.42   1.42 1.00                 6.04
1981-2010 Normals   1.11 0.86 0.74   0.49 0.68 0.82 0.98 1.41 1.03 0.85 0.93 1.10    3.88
  Percent of Normal    177 144 57   290 147                 156
Snowfall   4.0 19.7 7.6   M 16.5                  48.3*
                                 *Missing Data
Green River D0   1.90 1.10 0.85   1.25 0.68                 5.78
  1981-2010 Normals   0.81 0.41 0.44   0.34 0.43 0.71 0.85 1.23 0.98 0.55 0.68 0.90    2.43
  Percent of Normal   235 268 193   368 158                 238
Snowfall   5.5 10.6 8.5   16.8 9.5                  50.9
1981-2010 Normals   0.5 3.8 6.5   4.6 7.3 5.0 3.9 0.6 0.0 0.0 0.0 0.0   22.7
Percent of Normal   1100 279 131   365 130                  224
                                 
Rock Springs  D0   2.18 1.32 0.31   1.14 0.38                 5.33
  1981-2010 Normals   1.09 0.52 0.52    0.44  0.46 0.67  0.91 1.42 0.86 0.73  0.96  1.08   3.03
  Percent of Normal    200 254 60   259 83                 176
Snowfall   2.5 9.2 7.1   5.5 17.5                  58.4
                                 

Climate Division 4 - Big Horn Drainage
Climate Division:
Big Horn (Division Averages)
  Oct
2018
Nov
2018
Dec
2018
  Jan
2019
Feb
2019
Mar
2019
Apr
2019
May
2019
Jun
2019
Jul
2019
Aug
2019
Sep
2019
  Total for
WY2018-19
  Average Temperature   41.7 29.3 22.1   24.1 17.2                 26.9
  20th Century Average   42.6 29.2 20.6   17.7 22.7 30.2 39.8 49.1 58.1 65.8 63.7 53.5   26.6
  Departure from average   -0.9 0.1 1.5   6.4 -5.5                 0.3
  Rank: Warm to Cold (125 yrs)   46 66 57   18 105                 67
  Rank: Cold to Warm (125 yrs)   79 59 68   108 21                 58
  Precipitation   0.86 1.32 0.68   0.65 0.94                 4.45
  20th Century Average   1.14 0.95 0.87   0.92 0.75 1.12 1.75 2.22 1.92 1.13 0.94 1.31   4.63
  Percent of Average   75 139 78   71 125                 96
  Rank: Dry to Wet (125 yrs)   46 98 54   39 91                 56
  Rank: Wet to Dry (125 yrs)   79 27 71   87 35                 69
    

Station Name:   Oct
2018
Nov
2018
Dec
2018
  Jan
2019
Feb
2019
Mar
2019
Apr
2019
May
2019
Jun
2019
Jul
2019
Aug
2019
Sep
2019
  Total for
WY2018-19
 click on location   D0 D1                                
 for graph D2 D3 D4                                
Greybull Airport   D0   0.08 0.35 0.12   0.04 0.11                 0.70
  1981-2010 Normals    0.60  0.30  0.28    0.23  0.18  0.40  0.71  1.65  1.20  0.66  0.42  0.88    1.59
  Percent of Normal    13 117 43   17 61                 44
                                 
Worland Airport D0   0.13 0.48 T   0.07 0.05                 0.73
  1981-2010 Normals   0.69 0.35 0.23    0.23 0.19 0.46 0.86 1.42 1.15 0.71 0.43 0.85    1.69
  Percent of Normal    19 137 0   30 26                 43
                                 
Cody  D0   0.80 0.84 0.25   0.13 0.68                 2.70
  1981-2010 Normals   0.89 0.48 0.33   0.33 0.33 0.56 1.06 1.82 1.68 1.11 0.91 1.06    2.36
  Percent of Normal    90 175 76    39 206                 114
Snowfall   2.0 9.5 3.6   2.2 8.9                 26.2
1981-2010 Normals   4.3 6.3 8.0   7.8 6.7 6.9 6.3 0.8 0.0 0.0 0.0 0.2   33.1
  Percent of Normal    47 151 45   28 133                 79
                                 
Powell Field Station   D0   0.13 0.14 0.12   0.05 0.19                 0.63
  1981-2010 Normals   0.56 0.18 0.13   0.21 0.13 0.29 0.51 1.40 1.35 0.87 0.52  0.65    1.21
  Percent of Normal    23 78 92   24 146                 52
Snowfall   0.5 0.5 1.8   2.1 4.2                 9.1
1981-2010 Normals    1.2 1.3 1.2   2.3 0.5 2.5 0.5 0.5 0.0 0.0 0.0 0.1   6.5
  Percent of Normal    42 38 150   91 840                  140
                                 
Thermopolis   D0   0.43 1.22 0.48   0.21 0.13                 2.47
  1981-2010 Normals   1.26 0.80 0.46   0.35 0.45 0.87 1.46 1.86 1.51 0.88 0.58 1.23   3.32
  Percent of Normal    34 153 104   60 29                 74
Snowfall   0.0 13.0 9.5   3.0 2.0                 27.5
1981-2010 Normals   3.7 4.5  5.6    4.6 2.5 2.8 0.4 0.0 0.0 0.0 0.2 2.4   20.8
  Percent of Normal    0 351 211   54 43                 132

Climate Division 5 - Powder and Tongue Drainages
Climate Division:
Powder and Tongue
(Division Averages)
  Oct
2018
Nov
2018
Dec
2018
  Jan
2019
Feb
2019
Mar
2019
Apr
2019
May
2019
Jun
2019
Jul
2019
Aug
2019
Sep
2019
  Total for
WY2018-19
  Average Temperature   42.4 31.1 25.3   26.2 14.8                 28.0
  20th Century Average   44.6 31.0 22.3   19.6 23.8 31.1 41.2 50.8 60.2 68.2 66.5 55.9   28,3
  Departure from average   -2.2 0.1 3.0   6.6 -9.0                 -0.3
  Rank: Warm to Cold (125 yrs)   94 66 35   16 115                 76
  Rank: Cold to Warm (125 yrs)   31 59 90   110 11                 49
  Precipitation   1.26 0.79 0.80   0.54 0.41                 3.80
  20th Century Average   1.16 0.77 0.65   0.63 0.61 1.05 1.85 2.54 2.35 1.40 0.99 1.28   3.82
  Percent of Average   109 103 123   86 67                 99
  Rank: Dry to Wet (125 yrs)   78 73 90   59 32                 71
  Rank: Wet to Dry (125 yrs)   47 52 35   67 94                 54
    

Station Name:   Oct
2018
Nov
2018
Dec
2018
  Jan
2019
Feb
2019
Mar
2019
Apr
2019
May
2019
Jun
2019
Jul
2019
Aug
2019
Sep
2019
  Total for
WY2018-19
 click on location   D0 D1                                
 for graph D2 D3 D4                                
Buffalo Airport None   1.10 0.38 0.10   0.09 0.04                 1.71
1981-2010 Normals    0.93  0.54  0.40    0.42  0.35  0.92  1.30  2.53  2.28  1.66  0.81  1.31   2.64
  Percent of Normal    118 70 25   21 11                  65
                                 
Sheridan Arpt None   1.69 0.83 0.32   0.70 0.37                 3.91
  1981-2010 Normals    1.41  0.71  0.56    0.56  0.54  0.98  1.60  2.35 2.12  1.18  0.72  1.43   3.78
  Percent of Normal    120 117 57   125 69                  103
                                 
Kaycee None   1.31 0.43 0.54   0.25 0.12                 2.65
  1981-2010 Normals   1,04 0.57 0.31   0.30 0.34 0.74 1.46 2.37 1.84 1.42 0.80 1.18    2.56
  Percent of Normal    126 75 174   83 35                 104
Snowfall   5.0 6.0 10.0   4.0 3.5                 28.5
1981-2010 Normals   1.5 4.2 6.0   5.9 6.3 8.0 4.7 0.6 0.1 0.0 0.0 0.2   23.9
  Percent of Normal    333 143 167   68 56                 119
                                 

Climate Division 6 - Belle Fourche Drainage
v
Climate Division:
Belle Fourche (Division Averages)
  Oct
2018
Nov
2018
Dec
2018
  Jan
2019
Feb
2019
Mar
2019
Apr
2019
May
2019
Jun
2019
Jul
2019
Aug
2019
Sep
2019
  Total for
WY2018-19
  Average Temperature   41.6 30.3 25.1   24.9 9.3                 26.2
  20th Century Average   45.0 31.0 22.1   19.0 23.1 30.6 41.4 51.3 60.9 68.8 67.0 56.4   28.0
  Departure from average   -3.4 -0.7 3.0   5.9 -13.8                 -1.8
  Rank: Warm to Cold (125 yrs)   104 72 40   28 123                 97
  Rank: Cold to Warm (125 yrs)   21 53 85   98 3                 28
  Precipitation   1.18 0.69 1.23   0.74 0.72                 4.56
  20th Century Average   1.14 0.69 0.64   0.59 0.59 0.98 1.75 2.66 2.83 1.84 1.33 1.32    3.65
  Percent of Average   104 100 192   125 122                 125
  Rank: Dry to Wet (125 yrs)   43 86 117   94 84                 99
  Rank: Wet to Dry (125 yrs)   82 50 8   32 42                 26
    

\
Station Name:   Oct
2018
Nov
2018
Dec
2018
  Jan
2019
Feb
2019
Mar
2019
Apr
2019
May
2019
Jun
2019
Jul
2019
Aug
2019
Sep
2019
  Total for
WY2018-19
 click on location   D0 D1                                
 for graph D2 D3 D4                                
Gillette Airport None   1.01 0.69 0.64   0.34 0.28                   2.96
1981-2010 Normals    1.27  0.55  0.40    0.39 0.39  0.96  1.47  2.45 2.21  1.66  0.95  1.19    3.00
  Percent of Normal    80 125 160   87 72                 99
                                 

Climate Division 7 - Cheyenne and Niobrara Drainages
v v
Climate Division: Cheyenne and Niobrara
(Division Averages)
  Oct
2018
Nov
2018
Dec
2018
  Jan
2019
Feb
2019
Mar
2019
Apr
2019
May
2019
Jun
2019
Jul
2019
Aug
2019
Sep
2019
  Total for
WY2018-19
  Average Temperature   42.7 30.9 25.5   25.5 15.8                 28.1
  20th Century Average   45.8 31.8 23.0   20.3 24.6 32.1 42.5 52.4 62.5 70.3 68.4 57.6   29.1
  Departure from average   -3.1 -0.9 2.5   5.2 -8.8                 -1.0
  Rank: Warm to Cold (125 yrs)   100 77 52   25 114                 89
  Rank: Cold to Warm (125 yrs)   25 48 73   101 12                 36
  Precipitation   0.89 0.78 0.86   0.46 0.36                 3.35
  20th Century Average   0.95 0.55 0.48   0.42 0.46 0.76 1.68 2.53 2.34 1.78 1.21 1.14   2.86
  Percent of Average   94 142 179   110 78                 117
  Rank: Dry to Wet (125 yrs)   64 96 116   79 47                 93
  Rank: Wet to Dry (125 yrs)   61 29 9   47 79                 32
    

Climate Division 8 - Lower Platte Drainage
Climate Division:
Lower Platte (Division Averages)
  Oct
2018
Nov
2018
Dec
2018
  Jan
2019
Feb
2019
Mar
2019
Apr
2019
May
2019
Jun
2019
Jul
2019
Aug
2019
Sep
2019
  Total for
WY2018-19
  Average Temperature   43.0 31.7 26.2   26.8 22.8                 30.1
  20th Century Average   45.2 32.3 24.7   22.8 25.9 32.1 41.2 50.8 60.7 68.0 66.2 56.4   30.2
  Departure from Average   -2.2 -0.6 1.5   4.0 -3.1                 -0.1
  Rank: Warm to Cold (125 yrs)   98 79 52   31 92                 71
  Rank: Cold to Warm (125 yrs)   27 46 73   95 34                 54
  Precipitation   0.91 1.05 0.35   0.47 0.30                 3.08
  20th Century Average   1.05 0.68 0.63   0.51 0.59 0.97 1.90 2.55 2.05 1.58 1.17 1.21   3.46
  Percent of Average   87 154 56   92 51                 89
  Rank: Dry to Wet (125 yrs)   54 108 28   56 23                 43
  Rank: Wet to Dry (125 yrs)   71 17 97   70 103                 82
    

Station Name:   Oct
2018
Nov
2018
Dec
2018
  Jan
2019
Feb
2019
Mar
2019
Apr
2019
May
2019
Jun
2019
Jul
2019
Aug
2019
Sep
2019
  Total for
WY2018-19
 click on location   D0 D1                                
 for graph D2 D3 D4                                
Casper Airport   D0   1.69 0.94 0.40   0.28 0.50                 3.81
1981-2010 Normals    1.11  0.76  0.49    0.51 0.57  0.82  1.29  2.02  1.61  1.41  0.85  1.08    3.44
  Percent of Normal    152 124 82   55 88                  111
Snowfall   7.1 11.3 6.9   4.9 9.0                 39.2
1981-2010 Normals   7.4 10.3 11.0   9.1 9.8 10.9 11.6 2.9 0.1 0.0 0.0 1.8   47.6
  Percent of Normal    96 110 63   54 92                  82
                                 
Cheyenne Arpt D0   0.69 0.94 0.28   0.32 0.33                 2.56
  1981-2010 Normals    0.93  0.59  0.49    0.33  0.47  1.05  1.78  2.34  2.34  2.19 1.95  1.48   2.81
  Percent of Normal    74 159 57   97 70                  91
Snowfall   5.4 10.7 5.0   4.4 4.5                 30.0
1981-2010 Normals   5.0  8.0 8.4   5.9 7.9 11.3 10.2 2.3 0.0 0.0 0.0 1.3   35.2
  Percent of Normal    108 134 60   75 57                 85
                                 

Climate Division 9 - Wind River Drainage
Climate Division:
Wind River (Division Averages)
  Oct
2018
Nov
2018
Dec
2018
  Jan
2019
Feb
2019
Mar
2019
Apr
2019
May
2019
Jun
2019
Jul
2019
Aug
2019
Sep
2019
  Total for
WY2018-19
  Average Temperature   40.3 27.0 19.5   20.7 17.7                 25.0
  20th Century Average   41.8 27.9 19.5   17.3 22.0 29.0 38.3 48.0 57.0 64.7 62.8 52.9   25.7
  Departure from average   -1.5 -0.9 0.0   3.4 -4.3                 -0.7
  Rank: Warm to Cold (125 yrs)   88 80 68   38 103                 87
  Rank: Cold to Warm (125 yrs)   37 45 57   88 23                 38
  Precipitation   0.99 1.18 0.58   0.66 1.18                 4.59
  20th Century Average   1.20 0.96 0.84   0.93 0.81 1.26 1.89 2.25 1.67 1.04 0.88 1.19   4.74
  Percent of Average   82 123 69   71 146                 97
  Rank: Dry to Wet (125 yrs)   55 86 30   42 107                 60
  Rank: Wet to Dry (125 yrs)   70 39 95   84 19                 65
    

v
Station Name:   Oct
2018
Nov
2018
Dec
2018
  Jan
2019
Feb
2019
Mar
2019
Apr
2019
May
2019
Jun
2019
Jul
2019
Aug
2019
Sep
2019
  Total for
WY2018-19
 click on location   D0 D1                                
 for graph D2 D3 D4                                
Lander Airport D0   1.10 0.88 0.58   0.80 0.33                 3.69
  1981-2010 Normals    1.29  0.86  0.58    0.41  0.58  1.16  1.87  2.20  1.27  0.78 0.61  1.05   3.72
  Percent of Normal    85 102 100   195 57                   99
Snowfall   6.8 11.7 6.8   12.8 4.0                 42.1
1981-2010 Normals   9.8  13.1 10.1   7.6 10.3 16.1 16.8 4.8 0.1 0.0 0.0 2.7    50.9
  Percent of Normal    69 89 67   168 39                 83
                                 
Riverton Airport  D0   0.44 0.64 0.17   0.19 0.22                 1.66
  1981-2010 Normals    0.89  0.50  0.32    0.24  0.27  0.55  1.30  1.72  1.28  0.89  0.57  0.90   2.22
  Percent of Normal    49 128 53   79 81                 75
Snowfall    3.8 9.3 3.0   3.4 3.7                 23.2
                                 
Dubois  D0   0.81 0.80 0.25   0.12 0.49                 2.47
  1981-2010 Normals   0.81 0.57 0.28   0.24 0.38 0.40 1.10 1.64 1.28 1.11 0.86 1.24    2.28
  Percent of Normal    100 140 89   50 129                 108
Snowfall   1.8 15.5 5.7   3.7 11.4                 38.1
1981-2010 Normals   3.0 5.8 5.1   3.9 5.7 6.0 8.5 3.9 0.6 0.0 0.0 2.6   23.5
  Percent of Normal    60 267 112   95 200                 162
                                 
Riverton  D0   0.79 0.60 0.23   0.23 0.22                 2.07
  1981-2010 Normals   0.85 0.41 0.24   0.28 0.33 0.56 0.98 1.45 1.21 0.78 0.50 0.83    2.11
  Percent of Normal    93 146 96   82 67                   98
Snowfall   6.5 9.0 4.2   3.7 3.9                 27.3
1981-2010 Normals   3.7 4.3 4.8    4.8  6.0  5.9  6.1 1.2 0.0 0.0 0.0 0.3   23.6
  Percent of Normal    176 209 88   77 65                 116

Climate Division 10 - Upper Platte Drainage
Climate Division:
Upper Platte (Division Averages)
  Oct
2018
Nov
2018
Dec
2018
  Jan
2019
Feb
2019
Mar
2019
Apr
2019
May
2019
Jun
2019
Jul
2019
Aug
2019
Sep
2019
  Total for
WY2018-19
  Average Temperature   40.6 27.6 20.3   20.8 19.9                 25.8
  20th Century Average   41.8 28.3 20.2   18.3 21.7 28.0 37.5 47.4 57.1 64.5 62.6 52.9   26.1
  Departure from average   -1.2 -0.7 0.1   2.5 -1.8                 -0.2
  Rank: Warm to Cold (125 yrs)   85 82 64   40 84                 78
  Rank: Cold to Warm (125 yrs)   40 43 61   86 42                 47
  Precipitation   1.25 1.17 0.48   0.84 0.77                 4.51
  20th Century Average   1.09 0.83 0.82   0.80 0.83 1.06 1.58 1.78 1.27 1.10 0.93 1.08   4.37
  Percent of Average   115 141 59   105 93                 103
  Rank: Dry to Wet (125 yrs)   77 105 22   78 59                 65
  Rank: Wet to Dry (125 yrs)   48 20 103   48 67                 60
    

Station Name:   Oct
2018
Nov
2018
Dec
2018
  Jan
2019
Feb
2019
Mar
2019
Apr
2019
May
2019
Jun
2019
Jul
2019
Aug
2019
Sep
2019
  Total for
WY2018-19
 click on location   D0 D1                                
 for graph D2 D3 D4                                
Jeffrey City  None   1.42 0.29 0.32   0.50 0.17                 2.70
  1981-2010 Normals   0.91 0.59 0.42    0.31  0.41 0.86  1.27 1.85 1.15 0.89  0.60  0.80    2.64
  Percent of Normal    156 49 76   161 41                 102
Snowfall   7.0 3.5 4.0   7.0 3.0                 24.5
1981-2010 Normals   7.3 6.6 5.5   4.6 6.7 9.4 10.2 4.9 0.4 0.0 0.0 1.4    30.7
  Percent of Normal    96 53 73   152 45                 80

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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 March 2019 will be available on April 8, 2019*
* 2019 Climate Monitoring Release Dates

Wyoming: 2019

Precipitation - Percent of Normal Temperature - Departure from Normal
Wyoming: 2019 Percent of Normal Precipitation Wyoming: 2019 Departure from Normal Temperature
 Statewide Average (inches) 2.26  Statewide Average (°F) 19.9
 20th Century Average 2.03  20th Century Average 20.3
 Rank - Driest  to Wettest  (125 Years) 87  Rank - Warmest  to Coldest (125 Years) 78
 Rank - Wettest to Driest (125 Years) 39  Rank - Coldest to Warmest (125 Years) 48
 Driest Period on Record: Jan - Feb 1931 0.92  Warmest Period on Record: Jan - Feb 1954 27.5
 Wettest Period on Record: Jan - Feb 1899 4.32  Coldest Period on Record: Jan - Feb 1949 10.4

 

Wyoming: Last 12 Months

Precipitation - Percent of Normal Temperature - Departure from Normal
Wyoming: Last 12 Months Percent of Normal Precipitation Wyoming: Last 12 Months Departure from Normal Temperature
 Statewide Average (inches) 16.29  Statewide Average (°F) 42.0
 20th Century Average 15.93  20th Century Average 40.7
 Rank - Driest  to Wettest  (125 Years) 73  Rank - Warmest  to Coldest (125 Years) 30
 Rank - Wettest to Driest (125 Years) 52  Rank - Coldest to Warmest (125 Years) 95
 Driest Period on Record: Mar - Feb 2013 10.28  Warmest Period on Record:  Mar - Feb 2013 44.4

 Wettest Period on Record: Mar - Feb 1996

20.69  Coldest Period on Record: Mar - Feb 1913 37.3

Last 5 Years (March 2014 - February 2019)

Precipitation - Percent of Normal Temperature - Departure from Normal
Map Not Available For This Period Map Not Available For This Period
 Statewide Average (inches) 86.52  Statewide Average (°F) 43.1
 20th Century Average 79.58  20th Century Average 40.7
 Rank - Driest  to Wettest  (120 Periods) 106  Rank - Warmest  to Coldest (120 Periods) 119
 Rank - Wettest to Driest  (120 Periods) 15  Rank - Coldest to Warmest (120 Periods) 2
 Driest Period on Record: Mar 2000 - Feb 2005 16.02  Warmest Period on Record: Mar 2013 - Feb 2017 43.3
 Wettest Period on Record: Mar 1996 - Feb 2000 91.44  Coldest Period on Record: Mar 1912 - Feb 1917 39.2