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The table below shows the average, earliest and latest last freeze (32 degrees or colder) dates for locations around West and Central Wyoming, the last freeze date in recent years, and the dates for this season the last freeze occurred in the Spring/Summer between May 1st and July 31st. The locations will be updated for last freeze dates this season

Dates of the Last Spring Freeze Around West and Central Wyoming
Location County Elev. (ft) Early Average Late 2013 Last  <=32°
 2012
2011 2010 2009 2008

Clark 3NE
(1961-2013)

 Park 4090 MAY 5 MAY 23 JUN 18 MAY 6 MAY 26 MAY 5 MAY 23 MAY 16 JUN 11
Cody
Airport
(1915-2013)		 Park 5089 APR 20 MAY 18 JUN 29  MAY 2 MAY 26 MAY 2 MAY 8 JUN 7 MAY 10
Deaver
(1916-2013)
 Big Horn 4105 APR 20 MAY 21 JUN 27  MAY 5
 MAY 8 MAY 5 MAY 23 MAY 16 JUN 12
Greybull
(1999-2013)		 Big Horn 3940 MAY 5 MAY 14 JUN 7  MAY 3 MAY 7 MAY 5 MAY 8 JUN 7 MAY 5
Thermopolis
(1899-2013)
 Hot Springs 4313 APR 17 MAY 20 JUN 30  MAY 3
 MAY 8 MAY 30 MAY 12 MAY 13 MAY 22
Worland
(1960-2013)
 Washakie 4226 APR 17 MAY 12 JUN 12 MAY 3 MAY 8 MAY 6 MAY 9 APR 25 MAY 4
Buffalo
(1899-2013)
 Johnson 4670 APR 30 MAY 22 JUL 1  MAY 6 MAY 13 MAY 15 MAY 15 JUN 8 MAY 12
Buffalo
Airport
(1999-2013)
 Johnson 4967 MAY 11 MAY 19 JUN 8  MAY 2 MAY 12 MAY 15 MAY 14 JUN 8 MAY 11
Billy Creek
(1962-2013)
 Johnson 4975 MAY 1 MAY 27 JUN 18 MAY 3 MAY 12 MAY 29 MAY 14 MAY 16 JUN 12
Moose
(1958-2013)
 Teton 6470 MAY 21 JUL 2 JUL 31 JUN 16 JUN 27 JUN 27 JUL 15 JUL 9 JUN 14
Dubois
(1907-2013)
 Fremont 6955 MAY 25 JUN 27 JUL 31 JUN 16 JUN 21 JUN 27 JUN 21 JUN 23 JUN 12
Riverton
(town)
(1899-2013)
 Fremont 4955 APR 20 MAY 22 JUN 27  MAY 3 MAY 8 MAY 30 MAY 25 MAY 8 MAY 23
Fremont 5525 MAY 11 MAY 18 JUN 4  MAY 3 MAY 12 MAY 30 MAY 14 MAY 16 MAY 13
Lander (town)
(1999-2013)
 Fremont 5320 MAY 14 JUN 5 JUN 17  MAY 7 MAY 28 JUN 4 MAY 30 MAY 16 JUN 13
Lander
Hunt Field
(1891-2013)
 Fremont 5587 APR 21 MAY 22 JUN 20  MAY 3 MAY 6 MAY 30 MAY 14 MAY 13 MAY 26
Jeffrey City
(1964-2013)
 Fremont 6320 MAY 10 JUN 5 JUL 8  JUN 4 MAY 29 JUN 5 MAY 30 MAY 17 MAY 28
Casper
(1939-2013)
 Natrona 5277 APR 25 MAY 21 JUL 4  JUN 4 MAY 29 JUN 4 MAY 30 MAY 16 MAY 12
Bedford 3 SE
(1975-2013)
 Lincoln 6425 MAY 21 JUN 25 JUL 31 JUN 16 JUN 27 JUN 17 JUN 17 MAY 21 JUN 13
Pinedale
(1948-2013)
 Sublette 7195 JUN 11 JUL 5 JUL 31 JUN 16 JUN 16 JUN 23 JUL 4 JUN 23 JUL 15
Big Piney
(1976-2013)
 Sublette 6675 JUN 9 JUL 4 JUL 31 JUN 16 JUN 21 JUN 27 JUL 15 JUN 9 JUN 20
Fossil Butte
(1990-2013)
 Lincoln 6780 JUN 20 JUL 4 JUL 31 JUN 15 JUN 21 JUN 21 JUL 15 JUL 15 JUL 15
Green River
(1905-2013)
 Sweetwater 6077 MAY 2 JUN 4 JUL 13  MAY 4 MAY 29 MAY 31 JUN 18 M M
Rock Springs Apt.
(1948-2013)
 Sweetwater 6759 MAY 1 MAY 29 JUN 30  MAY 3 MAY 27 JUN 3 MAY 30 MAY 13 JUN 11
  MMDD= Tmin > 32°F for past 14 days    MMDD = Tmin <= 32°F for past 14 days   Last Updated Jun 16, 2013

 

Average and Recent Lengths of Growing Seasons Around West and Central Wyoming

   
Location County Elev. (ft) Longest Growing Season
Average Growing Season (Days)
Shortest Growing Season 2013 2012 2011 2010 2009 2008

Clark 3NE
(1961-2011)

 Park 4090
145 (1963,2005)
115
71 (1976)
  
108
138
106
128
88
Deaver
(1916-2013)
 Big Horn 4105
160 (1938)
119
86 (1992)
   127
138
117
126
92
Thermopolis
(1899-2013)
 Hot Springs 4313
181 (2007)
124
65 (1938)
  
150
135
154
131
140
Worland
(1960-2013)
 Washakie 4226
178 (2007)
140
102 (1974 )
  
147
138
152
130
159
Buffalo
(1899-2013)
 Johnson 4670
156 (1998)
119
57 (1904)
  
93
128
154
111
150
Billy Creek
(1962-2013)
 Johnson 4975
154 (1963)
112
78 (1964)
   144
113
115
134
 87
Moose
(1958-2013)
 Teton 6470
104 (1961)
50
0 (1995)
  
58
46
39
30
58
Dubois
(1907-2013)
 Fremont 6955
108 (1931)
59
0 (1995)
  
82
66
63
 54
75
Riverton
(1899-2013)
 Fremont 4955
159 (1998)
116
67 (1989)
  
127
113
104
136
122
Lander (town)
(1999-2013)
 Fremont 5320
128 (2009)
99
81 (2000, 2005)
  
107
95*
99
128
102
Lander Apt.
(1891-2013)
 Fremont 5587
170 (1987)
121
57 (1904)
  
150
128
163
139
136
Jeffrey City
(1964-2013)
 Fremont 6320
127 (2009)
98
53 (1985, 1993)
  
105
106
95
127
96
Casper
(1939-2013)
 Natrona 5277
165 (1963)
122
78 (1972)
  
107
108
95
119
112
Bedford 3 SE
(1975-2013)
 Lincoln 6425
110 (1990)
63
8 (1995)
  
69
76
66
86
79
Boulder Rearing Station
(1989-2013)
 Sublette 6940
79 (1991, 2001)
54
25 (2009)
  
64
45
28
25
30
Big Piney
(1976-2013)
 Sublette 6975
74 (2003)
43
2 (1987)
  
64
46
28
60
 67
Fossil Butte
(1990-2013)
 Lincoln 6780
78 (2001)
49
0 (1995)
  
64
72
28
24
27
Green River
(1905-2013)
 Sweetwater 6077
149 (1963)
97
45 (1968)
  
127
135
M
M
M
Rock Springs Apt.
(1948-2013)
 Sweetwater 6759
155 (1963)
115
73 (1973)

 
128
124
135
131
120
* Lander (town) - missing data during the period. Top of Page

 

 

 

 

 

 

 

 

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