National Weather Service United States Department of Commerce

Strong Storm Systems Impacting Both Coasts

The storm system on the East Coast is bringing widespread rain to the Mid-Atlantic and the Northeast. Freezing rain and snow is possible in interior, southern New England. A powerful Pacific storm system will bring heavy rain, high elevation snow, gusty winds, and extremely rough surf to the Pacific Northwest and northern California. 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 2018
Last  <=32°
2017 2016 2015 2014 2013

Clark 3NE
(1961-2018)

Park 4090 MAY 5 MAY 23 JUN 18 APR 27 MAY 27 MAY 12 MAY 11 MAY 14 MAY 6
Cody
(1915-2018)
Park 5102 APR 20 MAY 17 JUN 29 APR 25 APR 30 MAY 12 MAY 11 MAY 12 MAY 2
Deaver
(1916-2018)
Big Horn 4105 APR 19 MAY 19 JUN 21 APR 19 APR 21 MAY 12 MAY 11 MAY 14 MAY 5
Greybull Airport
(1999-2018)
Big Horn 3940 APR 15 MAY 11 JUN 7 APR 25 APR 30 APR 15 MAY 11 MAY 13 MAY 3
Thermopolis
(1899-2018)
Hot Springs 4313 APR 17 MAY 18 JUN 29 MAY 1 APR 29 MAY 11 MAY 11 MAY 13 MAY 3
Worland
(1960-2018)
Washakie 4252 APR 18 MAY 10 JUN 12 APR 27 APR 30 MAY 23 MAY 11 MAY 13 MAY 3
Buffalo
(1899-2018)
Johnson 4670 APR 30 MAY 21 JUL 1 MAY 2 MAY 20 MAY 18 MAY 18 MAY 16 MAY 6
Buffalo Airport
(1999-2018)
Johnson 4970 APR 25 MAY 16 JUN 8 APR 25 APR 30 MAY 13 MAY 11 MAY 11 MAY 2
Kaycee
(1949-2018)
Johnson 4660 MAY 1 MAY 24 JUL 4 MAY 12 MAY 21 MAY 18 MAY 20 MAY 14 MAY 7
Moose
(1958-2018)
Teton 6470 MAY 21 JUL 2 JUL 31 JUN 2 JUN 30 JUL 12 JUL 29 JUN 19 JUN 23
Dubois
(1907-2018)
Fremont 6955 MAY 18 JUN 27 JUL 31 MAY 18 MAY 28 JUN 1 JUL 30 JUN 18 JUN 23
Riverton (town)
(1907-2018)
Fremont 4955 APR 20 MAY 21 JUL 7 APR 27 MAY 18 MAY 12 MAY 11 MAY 14 MAY 3
Fremont 5528 MAY 3 MAY 17 JUN 4 MAY 1 MAY 18 MAY 11 MAY 20 MAY 14 MAY 3
Lander (town)
(1999-2018)
Fremont 5320 MAY 4 MAY 25 JUN 19 MAY 4 MAY 23 MAY 24 MAY 16 JUN 19 MAY 7
Lander Hunt Field
(1891-2018)
Fremont 5587 APR 21 MAY 22 JUL 3 MAY 12 MAY 20 MAY 12 MAY 19 JUN 19 MAY 3
Jeffrey City
(1964-2018)
Fremont 6320 MAY 10 JUN 2 JUL 8 MAY 15 MAY 23 MAY 19 MAY 26 JUN 15 JUN 4
Casper Airport
(1939-2018)
Natrona 5350 APR 25 MAY 21 JUL 4 MAY 2 MAY 20 JUN 1 MAY 20 MAY 14 JUN 4
Bedford 3 SE
(1975-2018)
Lincoln 6425 MAY 29 JUN 26 JUL 31 JUN 2 MAY 29 JUN 26 JUL 29 JUN 19 JUN 24
Pinedale
(1948-2018)
Sublette 7195 JUN 11 JUL 4 JUL 31 JUN 2 JUN 14 JUL 15 JUL 30 JUL 1 JUN 23
Big Piney Apt.
(1998-2018)
Sublette 6994 JUN 9 JUN 26 JUL 29 JUN 2 JUN 30 JUL 14 JUN 29 JUL 1 JUN 23
Fossil Butte
(1990-2018)
Lincoln 6780 JUN 20 JUL 5 JUL 31 JUN 2 JUN 30 JUL 13 JUL 30 JUL 1 JUN 21
Green River
(1905-2018)
Sweetwater 6077 MAY 2 JUN 4 JUL 31 MAY 2 MAY 20 MAY 13 MAY 26 MAY 17 MAY 4
Rock Springs Apt.
(1948-2018)
Sweetwater 6765 MAY 1 MAY 28 JUN 30 MAY 2 MAY 20 MAY 23 MAY 24 MAY 14 MAY 3
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Last Update on June 2, 2018


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 2017 2016 2015 2014 2013
Clark 3NE
(1961-2017)
Park 4090
150 (2013)
116

 71 (1976)

112

 145

103
120
150
Deaver
(1916-2017)
Big Horn 4105
165 (2017)
122
86 (1992)
165
150
157
120
148
Thermopolis
(1899-2017)
Hot Springs 4315
181 (2007)
127
65 (1938)
156
148
157
121
146
Worland
(1960-2017)
Washakie 4245
176 (1989)
140
102 (1974 )
 142
135
153
120
146
Buffalo
(1899-2017)
Johnson 4670
156 (1998)
119
57 (1904)
121
138
146
117
143
Kaycee
(1901-2017)
Johnson 4975
147 (2015)
113
56 (1904)
126
146
147
119
142
Moose
(1958-2017)
Teton 6470
104 (1961)
49
0 (1995)
78
21
24
48
69
Dubois
(1907-2017)
Fremont 6955
111 (2017)
59
2 (1908)
111
83
23
77
87
Riverton
(1907-2017)
Fremont 4950
159 (1998)
118
74 (1912)
130
145
153
120
146
Lander (town)
(1999-2017)
Fremont 5320
135 (2013)
113
81 (2000, 2005)
119
108
124 85
135
Lander Apt.
(1891-2017)
Fremont 5585
170 (1987)
122
57 (1904)
 133
145
155
84
145
Jeffrey City
(1964-2017)
Fremont 6320
127 (2009)
99
53 (1985, 1993)
116
113
88
55
107
Casper Apt.
(1939-2017)
Natrona 5320
165 (1963)
122
78 (1972)
 129
100
94
119
107
Location County Elev. (ft) Longest Growing Season
Average Growing Season (Days)
Shortest Growing Season 2017 2016 2015 2014 2013
Afton
(1957-2017)
Lincoln 6245  111 (2017) 52  8 (2015) 111 57 8 76 86
Bedford 3 SE
(1975-2017)
Lincoln 6425
109 (1990)
61
5 (2000)
84
38
24
76
86
Boulder Rearing Station
(1989-2017)
Sublette 6940
86 (2013)
53
19 (2016)
48
19
21
60
86
Big Piney
(1998-2017)
Sublette 6975
87 (2013)
61
20 (2016)
52
20
24 61
87
Fossil Butte
(1990-2017)
Lincoln 6780
89 (2013)
50
0 (1995)
77
21
20
61
89
Green River
(1905-2017)
Sweetwater 6130
149 (2015, 1963)
98
45 (1968)
119
145
149
117
144
Rock Springs Apt.
(1948-2017)
Sweetwater 6760
155 (1963)
116
73 (1973)

95

132
150
119
145
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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