National Weather Service United States Department of Commerce

Severe Thunderstorms With Heavy Rain Possible In The Upper Midwest; Excessive Heat For Central U.S.

Several rounds of strong to severe thunderstorms will be possible from the northern Plains and upper Midwest to the Great Lakes through Friday. Damaging winds, large hail, and flooding will be the primary threats with these storms. Excessive heat will grip the central Plains with heat indices approaching 105 to 110 degrees. Very hot and humid conditions are likely to expand into the Mid Atlantic. Read More >

Spring Last Freeze Information
Current Freeze Watches  Quick Jumps Current Freeze Warnings
MRCC's Last Freeze Graphics  Climatological Last Freeze Graphics  7 Day Minimum Temperature Forecast Freeze Data for Specific Cities  Growing Season Data for Specific Cities
 
Click on Images to Enlarge

Midwestern Regional Cimate Center Graphics

Last Freeze Data:
32° F

 
Dates of Last 32°F Freeze: Wyoming
Days since Most Recent 32°F Freeze
Date of Most Recent 32°F Freeze
Over past 14 days
Number of Days <=
32°F
Growing Degree Days (base 42°F) Since Most Recent 32°F Freeze

 


Midwestern Regional Cimate Center Graphics

Last Hard Freeze Data:
28° F
 
Dates of Last 28°F Freeze: Wyoming
Days since Most Recent 28°F Freeze
Date of Most Recent 28°F Freeze
Over past 14 days
Number of Days <=
28°F
Growing Degree Days (base 42°F) Since Most Recent 28°F Freeze

 

Climatological Last Freeze Graphics
Date of Median Last 32° F Freeze
Date of Early Last 32° F Freeze
Date of Late Last 32° F Freeze
 
 
Date of Median Last 28° F Freeze
Date of Early Last 28° F Freeze
Date of Late Last 28° F Freeze

 

7 Day Minimum Temperature Forecast
Tonight's Lows
Tomorrow Night's Lows
Night 3 Lows
 
 
Night 4 Lows
Night 5 Lows
Night 6 Lows
Night 7 Lows
6 - 10 Day Outlook
8 - 14 Day Outlook

More Information

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Dates of the Last Spring Freeze Around West and Central Wyoming

Location County Elev. (ft) Early Average Late 2017 Last  <=32° 2016 2015 2014 2013 2012

Clark 3NE
(1961-2017)

Park 4090 MAY 5 MAY 23 JUN 18 MAY 27 MAY 12 MAY 11 MAY 14 MAY 6 MAY 26
Cody
(1915-2017)
Park 5102 APR 20 MAY 18 JUN 29 APR 30 MAY 12 MAY 11 MAY 12 MAY 2 MAY 26
Deaver
(1916-2017)
Big Horn 4105 APR 26 MAY 19 JUN 21 APR 21 MAY 12 MAY 11 MAY 14 MAY 5 MAY 8
Greybull Airport
(1999-2017)
Big Horn 3940 MAY 3 MAY 13 JUN 7 APR 30 APR 15 MAY 11 MAY 13 MAY 3 MAY 7
Thermopolis
(1899-2017)
Hot Springs 4313 APR 17 MAY 18 JUN 29 APR 29 MAY 11 MAY 11 MAY 13 MAY 3 MAY 8
Worland
(1960-2017)
Washakie 4252 APR 18 MAY 10 JUN 12 APR 30 MAY 23 MAY 11 MAY 13 MAY 3 MAY 8
Buffalo
(1899-2017)
Johnson 4670 APR 30 MAY 21 JUL 1 MAY 20 MAY 18 MAY 18 MAY 16 MAY 6 MAY 13
Buffalo Airport
(1999-2017)
Johnson 4970 MAY 2 MAY 17 JUN 8 APR 30 MAY 13 MAY 11 MAY 11 MAY 2 MAY 12
Kaycee
(1949-2017)
Johnson 4660 MAY 1 MAY 24 JUL 4 MAY 21 MAY 18 MAY 20 MAY 14 MAY 7 MAY 13
Moose
(1958-2017)
Teton 6470 MAY 21 JUL 2 JUL 31 JUN 7 JUL 12 JUL 29 JUN 19 JUN 23 JUN 27
Dubois
(1907-2017)
Fremont 6955 MAY 25 JUN 27 JUL 31 MAY 28 JUN 1 JUL 30 JUN 18 JUN 23 JUN 21
Riverton (town)
(1899-2017)
Fremont 4955 APR 20 MAY 21 JUL 7 MAY 18 MAY 12 MAY 11 MAY 14 MAY 3 MAY 8
Fremont 5528 MAY 3 MAY 17 JUN 4 MAY 18 MAY 11 MAY 20 MAY 14 MAY 3 MAY 12
Lander (town)
(1999-2017)
Fremont 5320 MAY 7 MAY 25 JUN 19 MAY 23 MAY 24 MAY 16 JUN 19 MAY 7 MAY 28
Lander Hunt Field
(1891-2017)
Fremont 5587 APR 21 MAY 22 JUL 3 MAY 20 MAY 12 MAY 19 JUN 19 MAY 3 MAY 6
Jeffrey City
(1964-2017)
Fremont 6320 MAY 10 JUN 2 JUL 8 MAY 23 MAY 19 MAY 26 JUN 15 JUN 4 MAY 29
Casper Airport
(1939-2017)
Natrona 5350 APR 25 MAY 21 JUL 4 MAY 20 JUN 1 MAY 20 MAY 14 JUN 4 MAY 29
Bedford 3 SE
(1975-2017)
Lincoln 6425 MAY 31 JUN 27 JUL 31 MAY 29 JUN 26 JUL 29 JUN 19 JUN 24 JUN 27
Pinedale
(1948-2017)
Sublette 7195 JUN 11 JUL 5 JUL 31 JUN 14 JUL 15 JUL 30 JUL 1 JUN 23 JUN 21
Big Piney Apt.
(1998-2017)
Sublette 6994 JUN 9 JUN 26 JUL 29 JUN 14 JUL 14 JUN 29 JUL 1 JUN 23 JUN 21
Fossil Butte
(1990-2017)
Lincoln 6780 JUN 20 JUL 5 JUL 31 JUN 15 JUL 13 JUL 30 JUL 1 JUN 21 JUN 21
Green River
(1905-2017)
Sweetwater 6077 MAY 2 JUN 4 JUL 31 MAY 20 MAY 13 MAY 26 MAY 17 MAY 4 MAY 29
Rock Springs Apt.
(1948-2017)
Sweetwater 6765 MAY 1 MAY 28 JUN 30 MAY 20 MAY 23 MAY 24 MAY 14 MAY 3 MAY 27
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MMM DD = Tmin > 32°F during the past 14 days  |  MMM DD = Tmin <= 32°F during the past 14 days
MMM DD = Record for latest last freeze date.
MMM DD = Record for earliest last freeze date.

 

Median Start of Greenup Date for All Vegetation
 
 
 
Median Start of Greenup Date for All Vegetation - Click to Enlarge
 

 

Growing Season Data
Location County Elev. (ft) Longest Growing Season
Average Growing Season (Days)
Shortest Growing Season 2016 2015 2014 2013 2012
Clark 3NE
(1961-2017)
Park 4090
150 (2013)
116
71 (1976)
145

 103

120
150
108
Deaver
(1916-2017)
Big Horn 4105
160 (1938)
122
86 (1992)
150
157
120
148
127
Thermopolis
(1899-2017)
Hot Springs 4315
181 (2007)
127
65 (1938)
148
157
121
146
150
Worland
(1960-2017)
Washakie 4245
176 (1989)
140
102 (1974 )
 135
153
120
146
147
Buffalo
(1899-2017)
Johnson 4670
156 (1998)
119
57 (1904)
138
146
117
143
93
Kaycee
(1901-2017)
Johnson 4975
147 (2015)
113
56 (1904)
146
147
119
142
143
Moose
(1958-2017)
Teton 6470
104 (1961)
49
0 (1995)
21
24
48
69
58
Dubois
(1907-2017)
Fremont 6955
108 (1931)
59
2 (1908)
83
23
77
87
82
Riverton
(1907-2017)
Fremont 4950
159 (1998)
118
74 (1912)
145
153
120
146
127
Lander (town)
(1999-2017)
Fremont 5320
135 (2013)
113
81 (2000, 2005)
108
124
85 135
107
Lander Apt.
(1891-2017)
Fremont 5585
170 (1987)
122
57 (1904)
 145
155
84
145
150
Jeffrey City
(1964-2017)
Fremont 6320
127 (2009)
99
53 (1985, 1993)
113
127
55
107
105
Casper Apt.
(1939-2017)
Natrona 5320
165 (1963)
122
78 (1972)
 100
94
119
107
107
Location County Elev. (ft) Longest Growing Season
Average Growing Season (Days)
Shortest Growing Season 2016 2015 2014 2013 2012
Afton
(1957-2017)
Lincoln 6245  108 (2009) 52  8 (2015) 57  8 76 87 82
Bedford 3 SE
(1975-2017)
Lincoln 6425
109 (1990)
61
5 (2000)
38
24
76
86
69
Boulder Rearing Station
(1989-2017)
Sublette 6940
86 (2013)
53
19 (2016)
19
21
60
86
64
Big Piney
(1998-2017)
Sublette 6975
87 (2013)
61
24 (2015)
20
24
61 87
64
Fossil Butte
(1990-2017)
Lincoln 6780
89 (2013)
50
0 (1995)
21
20
61
89
M
Green River
(1905-2017)
Sweetwater 6130
149 (2014, 1963)
98
45 (1968)
145
149
117
144
127
Rock Springs Apt.
(1948-2017)
Sweetwater 6760
155 (1963)
116
73 (1973)

132

150
119
145
128
Growing Season = Number of Days between last Spring Freeze and first Fall freeze (<= 32°F)
M = missing data during the period.
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