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Spring Last Freeze Information
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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 2020
Last  <=32°
2019 2018 2017 2016 2015

Clark 3NE
(1961-2019)

Park 4090 MAY 5 MAY 23 JUN 18 MAY 8 JUN 9 JUN 12 MAY 27 MAY 12 MAY 11
Cody
(1915-2019)
Park 5102 APR 20 MAY 17 JUN 29 MAY 12 MAY 22 APR 25 APR 30 MAY 12 MAY 11
Deaver
(1916-2019)
Big Horn 4105 APR 19 MAY 18 JUN 21 MAY 9 MAY 4 APR 19 APR 21 MAY 12 MAY 11
Greybull Airport
(1999-2019)
Big Horn 3940 APR 15 MAY 9 JUN 7 APR 4 MAY 10 APR 25 APR 30 APR 15 MAY 11
Thermopolis
(1899-2019)
Hot Springs 4313 APR 17 MAY 17 JUN 29 APR 21 MAY 3 MAY 1 APR 29 MAY 11 MAY 11
Worland
(1960-2019)
Washakie 4252 APR 18 MAY 10 JUN 12 MAY 8 MAY 10 APR 27 APR 30 MAY 23 MAY 11
Buffalo
(1899-2019)
Johnson 4670 APR 30 MAY 21 JUL 1 MAY 10 JUN 9 MAY 30 MAY 21 MAY 19 MAY 18
Buffalo Airport
(1999-2019)
Johnson 4970 APR 25 MAY 15 JUN 8 MAY 10 MAY 21 APR 25 APR 30 MAY 13 MAY 11
Kaycee
(1949-2019)
Johnson 4660 MAY 1 MAY 25 JUL 5 MAY 25 MAY 24 JUL 5 MAY 22 MAY 18 MAY 21
Moose
(1958-2019)
Teton 6470 MAY 21 JUL 2 JUL 31 JUN 10 MAY 22 JUN 25 JUN 30 JUL 12 JUL 29
Dubois
(1907-2019)
Fremont 6955 MAY 23 JUN 26 JUL 31 JUN 19 JUN 22 JUN 12 MAY 28 JUN 1 JUL 30
Riverton (town)
(1907-2019)
Fremont 4955 APR 20 MAY 21 JUL 7 MAY 24 MAY 22 APR 27 MAY 18 MAY 12 MAY 11
Fremont 5528 MAY 1 MAY 17 JUN 4 MAY 24 MAY 22 MAY 1 MAY 18 MAY 11 MAY 20
Lander (town)
(1999-2019)
Fremont 5320 MAY 4 MAY 24 JUN 19 MAY 24 JUN 10 MAY 4 MAY 23 MAY 24 MAY 16
Lander Hunt Field
(1891-2019)
Fremont 5587 APR 21 MAY 19 JUL 3 MAY 11 JUN 9 MAY 12 MAY 20 MAY 12 MAY 19
Jeffrey City
(1964-2019)
Fremont 6320 MAY 10 JUN 1 JUL 8 MAY 26 JUN 10 MAY 15 MAY 23 MAY 19 MAY 26
Casper Airport
(1939-2019)
Natrona 5350 APR 25 MAY 22 JUL 4 JUN 18 JUN 10 MAY 2 MAY 20 JUN 1 MAY 20
Bedford 3 SE
(1975-2019)
Lincoln 6425 MAY 29 JUN 26 JUL 31 JUN 10 JUN 23 JUN 13 MAY 29 JUN 26 JUL 29
Pinedale
(1948-2019)
Sublette 7195 JUN 11 JUL 4 JUL 31 JUN 19 JUN 25 JUL 1 JUN 14 JUL 15 JUL 30
Big Piney Apt.
(1998-2019)
Sublette 6994 JUN 9 JUN 27 JUL 29 JUL 15 JUN 25 JUL 1 JUN 30 JUL 14 JUN 29
Fossil Butte
(1990-2019)
Lincoln 6780 JUN 20 JUL 5 JUL 31 JUL 15 JUN 29 JUL 1 JUN 30 JUL 13 JUL 30
Green River
(1905-2019)
Sweetwater 6077 MAY 2 JUN 3 JUL 31 MAY 24 JUN 10 MAY 2 MAY 20 MAY 13 MAY 26
Rock Springs Apt.
(1948-2019)
Sweetwater 6765 MAY 1 MAY 28 JUN 30 MAY 24 JUN 9 MAY 2 JUN 13 MAY 23 MAY 24
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Last updated on February 8, 2021


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 2020   2019 2018 2017 2016

Clark 3 NE
(1961-2018)

Park 4090
150 (2013)
116
71 (1976)
123  
112
104
112
145
Deaver
(1916-2018)
Big Horn 4105
165 (2017, 2018)
123
86 (1992)
123  
121 
165
165
150
Thermopolis
(1899-2018)
Hot Springs 4315
181 (2007)
128

65 (1938)

139  
152
147
156
148
Worland
(1960-2018)
Washakie 4245
176 (1989)
140
102 (1974 )
122  
144
146
142
135
Buffalo
(1899-2018)
Johnson 4670
156 (1998)
119
57 (1904)
120  
113
144
121
138
Kaycee
(1949-2018)
Johnson 4975
147 (2015)
113
56 (1904)
105   133 82
126
146
Moose
(1958-2018)
Teton 6470
104 (1961)
50
0 (1995)
89  
82
64
78
21
Dubois
(1907-2018)
Fremont 6955
111 (2017)
58 
0 (1995)
80  
87
80
111
83
Riverton
(1907-2018)
Fremont 4950
159 (1998)
118
67 (1989)
106  
133
150
130
145
Lander (town)
(1999-2018)
Fremont 5320
139 (2018)
102
81 (2000, 2005)
118  
114
136
133
145
Lander Apt.
(1891-2018)
Fremont 5585
170 (1987)
122
57 (1904)
118  
114
136
133
145
Jeffrey City
(1964-2018)
Fremont 6320
127 (2009)
99
53 (1985, 1993)
96  
99
105
116
113
Casper Apt.
(1939-2018)
Natrona 5320
165 (1963)
121
78 (1972)
80  
113
141
129
100
Location County Elev. (ft) Longest Growing Season
Average Growing Season (Days)
Shortest Growing Season 2020   2019 2018 2017 2016
Afton
(1957-2018)
Lincoln 6245  111 (2017) 54 8 (2015) 82   65 77 111 57
Bedford 3 SE
(1975-2018)
Lincoln 6425
109 (1990)
61
5(2000)
82  
86
82
84
38
Boulder Rearing Station
(1989-2018)
Sublette 6940
86 (2013)
52
19 (2016)
72  
52
71
48
19
Big Piney
(1998-2018)
Sublette 6975
87 (2013)
59
2 (1987)
46  
48
57
52
20
Fossil Butte
(1990-2018)
Lincoln 6780
89 (2013)
50
0 (1995)
31  
44
55
77
21
Green River
(1905-2018)
Sweetwater 6130
149 (2015)
99
45 (1968)
106  
112
145
119
145
Rock Springs Apt.
(1948-2018)
Sweetwater 6760
155 (1963)
116
73 (1973)

105

 
100
145
95
132

XX (2018) = New record set in 2018.  M = missing data during the period.
Growing Season = Number of Days between last Spring Freeze and first Fall freeze (<= 32°F)

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