National Weather Service United States Department of Commerce

 

Fall First Freeze Information
Current Freeze Watches  Quick Jumps Current Freeze Warnings
MRCC's First Freeze Graphics  Climatological First 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
 
Greatest Consecutive Hours <= 32°F: Last 30 Days
 

 


Midwestern Regional Cimate Center Graphics

First Freeze Data:
32° F

 
Dates of First 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

First Hard Freeze Data:
28° F

 
Dates of First 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 First Freeze Graphics
Date of Median First 32° F Freeze
Date of Early First 32° F Freeze
Date of Late First 32° F Freeze
 
 
Date of Median First 28° F Freeze
Date of Early First 28° F Freeze
Date of Late First 28° F Freeze

 

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

More Information

Top of Page

 

Climatological First Freeze Data

Location

County

Elev.
(ft)

 

Early

Average

Late

 

2017
 33F-36F

2017
29F-32F

2017
<=28F

 

2016

2015

2014

2013

Clark 3NE
(1961-2017)
Park 4090   AUG 23
(2015)
SEP 16 OCT 15
(1963)
           OCT 5 AUG 23 SEP 12 OCT 4
Cody Airport
(1915-2017)
Park 5100   AUG 21
(1945)
SEP 21 NOV 1
(1940)
          OCT 5 OCT 28 SEP 11 OCT 3
(1916-2017)
Big Horn 4105   AUG 26
(1992)
SEP 19 OCT 17
(2015)
          OCT 11 OCT 17 SEP 12 OCT 1
(1999-2017)
Big Horn 3935   SEP 12
(2014)
OCT 1 OCT 18
(2011)
          OCT 11 OCT 16 SEP 12 OCT 4
Thermopolis
(1899-2017)
Hot Springs 4315   AUG 15
(1938)
SEP 22 OCT 19
(2007)
          OCT 7 OCT 16 SEP 12 SEP 27
Worland Airport
(1960-2017)
Washakie 4245   SEP 2
(1974)
SEP 28 OCT 18
(1989)
          OCT 6 OCT 12 SEP 12 SEP 28
Buffalo
(1899-2017)
Johnson 4670   AUG 15
(2012)
SEP 18 OCT 17
(1963)
          OCT 5 OCT 12 SEP 11 SEP 27
Buffalo Airport
(1999-2017)
Johnson 4970   SEP 10
(2014)
OCT 1 OCT 19
(2011)
          OCT 5 OCT 16 SEP 10 SEP 27
Kaycee
(1949-2017)
Johnson 4975   AUG 20
(1964)
SEP 15 OCT 16
(2015)
          OCT 12 OCT 16 SEP 11 SEP 27
Moose
(1958-2017)
Teton 6470   AUG 1
(1995)
AUG 20 SEP 23
(1998)
   AUG 16       AUG 3 AUG 23 AUG 2 SEP 1
Dubois
(1907-2017)
Fremont 6955   AUG 1
(1927)
AUG 22 SEP 21
(1990)
   AUG 16

 

    AUG 24 AUG 23 SEP 4 SEP 19
Riverton
(1907-2017)
Fremont 4950   AUG 7
(1912)
SEP 16 OCT 12
(2015)
          OCT 5 OCT 12 SEP 12 SEP 27
Lander (town)
(1999-2017)
Fremont 5320   AUG 31
(2005)
SEP 14 SEP 20
(2013)
          SEP 10 SEP 18 SEP 13 SEP 20
Lander Hunt Field
(1891-2017)
Fremont 5585   AUG 22
(1904)
SEP 21 OCT 25
(2010)
          OCT 5 OCT 22 SEP 12 SEP 26
Jeffrey City
(1964-2017)
Fremont 6320   AUG 10
(2014)
SEP 10 OCT 5
(2001)
  SEP 6       SEP 10 AUG 23 AUG 10 SEP 20
Casper Airport
(1939-2017)
Natrona 5320   AUG 23
(2015)
SEP 20 OCT 28
(1940)
  SEP 6       SEP 10 AUG 23 SEP 12 SEP 20

Location

County

Elev.
(ft)

 

Early    

Average

Late 

 

2017
33F-36F

2017
29F-32F

2017
<=28F

 

2016

2015

2014

2013

Afton
(1957-2017)
Lincoln 6245   AUG 2
(1975)
AUG 22 SEP 24
(1963)
   AUG 22       AUG 24 AUG 6 SEP 4 SEP 19
Bedford 3 SE
(1975-2017)
Lincoln 6425   AUG 1
(2000)
AUG 25 OCT 2
(1990)
   AUG 22  AUG 22     AUG 4 AUG 23 SEP 4 SEP 19
Sublette 6940   AUG 1
(1995)
AUG 20 SEP 19
(2013)
   AUG 16  AUG 19     AUG 4 AUG 21 SEP 1 SEP 19
Big Piney Airport
(1998-2017)
Sublette 6975   AUG 4
(2016)
AUG 11 SEP 19
(2013)
   AUG 16  AUG 22     AUG 4 AUG 23 SEP 1 SEP 19
Fossil Butte
(1990-2017)
Lincoln 6780   AUG 1
(1995)
AUG 22 SEP 19
(2013)
   AUG 19       AUG 4 AUG 20 SEP 1 SEP 19
Green River
(1905-2017)
Sweetwater 6130   AUG 4
(1980)
SEP 10 OCT 23
(2015)
          OCT 6 OCT 23 SEP 12 SEP 26
Rock Springs Apt.
(1948-2017)
Sweetwater 6760   SEP 1
(1973)
SEP 21 OCT 24
(1963)
          OCT 3 OCT 22 SEP 11 SEP 26
*Month Day* = record earliest freeze    *Month Day* = Record latest freeze

Last Updated September 6, 2017

Top of Page

 

Growing Season Data
Location County Elev. (ft) Longest Growing Season
Average Growing Season (Days)
Shortest Growing Season 2017   2016 2015 2014 2013

Clark 3 NE
(1961-2017)

Park 4090
150 (2013)
118
71 (1976)
   
145
103
120
150

 

Deaver
(1916-2017)
Big Horn 4105
160 (1938)
121
86 (1992)
   
150
157
120
148
Thermopolis
(1899-2017)
Hot Springs 4315
181 (2007)
125

65 (1938)

   
148
157
121
146
Worland
(1960-2017)
Washakie 4245
176 (1989)
141
102 (1974 )
   
135
153
120
146
Buffalo
(1899-2017)
Johnson 4670
156 (1998)
124
57 (1904)
   
138
146
117
143
Kaycee
(1949-2017)
Johnson 4975
147 (2015)
114
78 (1964)
    146 147
119
142
Moose
(1958-2017)
Teton 6470
104 (1961)
50
0 (1995)
   
21
24
43
69
Dubois
(1907-2017)
Fremont 6955
108 (1931)
58
0 (1995)
   
83
23
77
87
Riverton
(1907-2017)
Fremont 4950
159 (1998)
116
67 (1989)
   
145
153
120
146
Lander (town)
(1999-2017)
Fremont 5320
135 (2013)
102
81 (2000, 2005)
   
108
124
85
135
Lander Apt.
(1891-2017)
Fremont 5585
170 (1987)
121
57 (1904)
   
145
155
106
145
Jeffrey City
(1964-2017)
Fremont 6320
127 (2009)
99
53 (1985, 1993)
   
113
88
55
107
Casper Apt.
(1939-2017)
Natrona 5320
165 (1963)
121
78 (1972)
   
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  108 (2009) 57 8 (2015)      57 8 76 87
Bedford 3 SE
(1975-2017)
Lincoln 6425
109 (1990)
61
8 (1995)
   
38
24
76
86
Boulder Rearing Station
(1989-2017)
Sublette 6940
86 (2013)
56
19 (2016)
48  
19
21
60
86
Big Piney
(1998-2017)
Sublette 6975
87 (2013)
45
2 (1987)
52  
20
24
61
87
Fossil Butte
(1990-2017)
Lincoln 6780
89 (2013)
51
0 (1995)
   
21
20
61
89
Green River
(1905-2017)
Sweetwater 6130
149 (2015)
97
45 (1968)
   
145
149
117
144
Rock Springs Apt.
(1948-2017)
Sweetwater 6760
155 (1963)
115
73 (1973)

 

 
132
150
119
145

XX (2017) = New record set in 2017.  M = missing data during the period.
Growing Season = Number of Days between last Spring Freeze and first Fall freeze (<= 32°F)

  Top of Page