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First and Last Frost Dates for Wyoming

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Cities in Wyoming

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📍City 🌷 Last Frost (30% chance of 36°F on or after…) 🍂 First Frost (30% chance of 36°F on or before…)
Afton Always a risk (see details) Always a risk (see details)
Aladdin May 15 (see details) Sep 25 (see details)
Albin May 20 (see details) Sep 24 (see details)
Alcova Jun 3 (see details) Sep 17 (see details)
Alpine Always a risk (see details) Always a risk (see details)
Alta Always a risk (see details) Always a risk (see details)
Alva May 24 (see details) Sep 15 (see details)
Arapahoe May 23 (see details) Sep 21 (see details)
Arminto May 30 (see details) Sep 12 (see details)
Arvada May 30 (see details) Sep 16 (see details)
Auburn Always a risk (see details) Always a risk (see details)
Baggs Jun 11 (see details) Sep 9 (see details)
Bairoil Jun 3 (see details) Sep 17 (see details)
Banner May 23 (see details) Sep 22 (see details)
Basin May 15 (see details) Sep 21 (see details)
Bedford Always a risk (see details) Always a risk (see details)
Beulah May 10 (see details) Sep 25 (see details)
Big Horn May 31 (see details) Sep 17 (see details)
Big Piney Always a risk (see details) Always a risk (see details)
Bondurant Always a risk (see details) Always a risk (see details)
Bosler Jun 12 (see details) Sep 2 (see details)
Boulder Always a risk (see details) Always a risk (see details)
Buffalo May 23 (see details) Sep 21 (see details)
Buford May 31 (see details) Sep 16 (see details)
Burlington May 21 (see details) Sep 20 (see details)
Burns May 19 (see details) Sep 20 (see details)
Byron May 17 (see details) Sep 22 (see details)
Carpenter May 19 (see details) Sep 20 (see details)
Casper May 31 (see details) Sep 16 (see details)
Centennial Always a risk (see details) Always a risk (see details)
Cheyenne May 18 (see details) Sep 24 (see details)
Chugwater May 28 (see details) Sep 17 (see details)
Clearmont May 20 (see details) Sep 23 (see details)
Cody May 31 (see details) Sep 16 (see details)
Cokeville Always a risk (see details) Always a risk (see details)
Cora Always a risk (see details) Always a risk (see details)
Cowley May 17 (see details) Sep 22 (see details)
Crowheart Jun 13 (see details) Sep 6 (see details)
Daniel Always a risk (see details) Always a risk (see details)
Dayton May 19 (see details) Sep 18 (see details)
Deaver May 21 (see details) Sep 17 (see details)
Devils Tower Jun 3 (see details) Sep 10 (see details)
Diamondville Always a risk (see details) Always a risk (see details)
Dixon Jun 14 (see details) Sep 9 (see details)
Douglas May 25 (see details) Sep 16 (see details)
Dubois Always a risk (see details) Always a risk (see details)
Edgerton May 25 (see details) Sep 19 (see details)
Elk Mountain Jun 9 (see details) Sep 5 (see details)
Emblem May 21 (see details) Sep 20 (see details)
Encampment Jun 4 (see details) Sep 12 (see details)
Etna Always a risk (see details) Always a risk (see details)
Evanston Jun 14 (see details) Sep 9 (see details)
Evansville May 31 (see details) Sep 17 (see details)
Fairview Always a risk (see details) Always a risk (see details)
Farson Always a risk (see details) Always a risk (see details)
Fe Warren Afb May 18 (see details) Sep 24 (see details)
Fort Bridger Jun 14 (see details) Sep 9 (see details)
Fort Laramie May 29 (see details) Sep 15 (see details)
Fort Washakie May 23 (see details) Sep 21 (see details)
Frannie May 17 (see details) Sep 22 (see details)
Freedom Jun 1 (see details) Sep 12 (see details)
Frontier Always a risk (see details) Always a risk (see details)
Garrett Always a risk (see details) Always a risk (see details)
Gillette May 31 (see details) Sep 18 (see details)
Glendo May 27 (see details) Sep 18 (see details)
Glenrock May 20 (see details) Sep 20 (see details)
Granger Jun 3 (see details) Sep 19 (see details)
Granite Canon May 31 (see details) Sep 16 (see details)
Green River Jun 3 (see details) Sep 19 (see details)
Greybull May 19 (see details) Sep 18 (see details)
Grover Always a risk (see details) Always a risk (see details)
Guernsey May 19 (see details) Sep 18 (see details)
Hanna May 31 (see details) Sep 17 (see details)
Hartville May 19 (see details) Sep 18 (see details)
Hawk Springs May 24 (see details) Sep 19 (see details)
Hiland Jun 3 (see details) Sep 17 (see details)
Hillsdale May 31 (see details) Sep 16 (see details)
Horse Creek May 31 (see details) Sep 16 (see details)
Hudson May 23 (see details) Sep 21 (see details)
Hulett May 24 (see details) Sep 15 (see details)
Huntley May 14 (see details) Sep 22 (see details)
Hyattville May 17 (see details) Sep 25 (see details)
Jackson Always a risk (see details) Always a risk (see details)
Jay Em Jun 1 (see details) Sep 16 (see details)
Jeffrey City Jun 6 (see details) Sep 9 (see details)
Jelm Always a risk (see details) Always a risk (see details)
Kaycee May 22 (see details) Sep 18 (see details)
Kelly Always a risk (see details) Always a risk (see details)
Kemmerer Always a risk (see details) Always a risk (see details)
Kinnear May 23 (see details) Sep 23 (see details)
Kirby May 13 (see details) Sep 26 (see details)
La Barge Always a risk (see details) Always a risk (see details)
Lagrange May 31 (see details) Sep 15 (see details)
Lance Creek May 24 (see details) Sep 16 (see details)
Lander May 23 (see details) Sep 21 (see details)
Laramie Jun 12 (see details) Sep 2 (see details)
Leiter May 20 (see details) Sep 23 (see details)
Linch May 25 (see details) Sep 19 (see details)
Lingle May 20 (see details) Sep 18 (see details)
Little America Jun 3 (see details) Sep 19 (see details)
Lonetree Jun 14 (see details) Sep 9 (see details)
Lost Springs May 27 (see details) Sep 18 (see details)
Lovell May 17 (see details) Sep 22 (see details)
Lusk Jun 1 (see details) Sep 16 (see details)
Lyman Jun 14 (see details) Sep 9 (see details)
Lysite May 30 (see details) Sep 12 (see details)
Manderson May 15 (see details) Sep 21 (see details)
Manville Jun 1 (see details) Sep 16 (see details)
McKinnon Jun 5 (see details) Sep 20 (see details)
Medicine Bow Always a risk (see details) Always a risk (see details)
Meeteetse Always a risk (see details) Always a risk (see details)
Meriden May 31 (see details) Sep 15 (see details)
Midwest May 25 (see details) Sep 19 (see details)
Mills May 31 (see details) Sep 16 (see details)
Moorcroft Jun 3 (see details) Sep 10 (see details)
Moose Always a risk (see details) Always a risk (see details)
Moran Always a risk (see details) Always a risk (see details)
Mountain View Jun 14 (see details) Sep 9 (see details)
Natrona May 31 (see details) Sep 16 (see details)
Newcastle May 20 (see details) Sep 22 (see details)
Opal Always a risk (see details) Always a risk (see details)
Osage May 26 (see details) Sep 19 (see details)
Otto May 21 (see details) Sep 20 (see details)
Parkman May 31 (see details) Sep 17 (see details)
Pavillion May 23 (see details) Sep 23 (see details)
Pine Bluffs May 24 (see details) Sep 21 (see details)
Pinedale Always a risk (see details) Always a risk (see details)
Point Of Rocks Always a risk (see details) Always a risk (see details)
Powder River May 31 (see details) Sep 16 (see details)
Powell May 27 (see details) Sep 18 (see details)
Ralston May 27 (see details) Sep 18 (see details)
Ranchester May 31 (see details) Sep 17 (see details)
Rawlins Jun 10 (see details) Sep 11 (see details)
Recluse Jun 6 (see details) Sep 4 (see details)
Reliance Always a risk (see details) Always a risk (see details)
Riverton May 25 (see details) Sep 17 (see details)
Robertson Jun 14 (see details) Sep 9 (see details)
Rock River Always a risk (see details) Always a risk (see details)
Rock Springs Jun 1 (see details) Sep 17 (see details)
Rozet May 31 (see details) Sep 13 (see details)
Saratoga Jun 4 (see details) Sep 12 (see details)
Savery Jun 6 (see details) Sep 16 (see details)
Shawnee May 27 (see details) Sep 18 (see details)
Shell May 19 (see details) Sep 18 (see details)
Sheridan May 28 (see details) Sep 13 (see details)
Shoshoni May 13 (see details) Sep 26 (see details)
Sinclair Jun 10 (see details) Sep 11 (see details)
Smoot Always a risk (see details) Always a risk (see details)
Story May 31 (see details) Sep 17 (see details)
Sundance May 28 (see details) Sep 17 (see details)
Superior Always a risk (see details) Always a risk (see details)
Ten Sleep May 30 (see details) Sep 12 (see details)
Teton Village Always a risk (see details) Always a risk (see details)
Thayne Always a risk (see details) Always a risk (see details)
Thermopolis Always a risk (see details) Always a risk (see details)
Tie Siding Jun 10 (see details) Sep 10 (see details)
Torrington May 20 (see details) Sep 18 (see details)
Upton May 26 (see details) Sep 19 (see details)
Van Tassell May 25 (see details) Sep 19 (see details)
Veteran May 22 (see details) Sep 21 (see details)
Walcott Jun 4 (see details) Sep 12 (see details)
Wamsutter Jun 11 (see details) Sep 9 (see details)
Wapiti May 31 (see details) Sep 16 (see details)
Weston May 28 (see details) Sep 14 (see details)
Wheatland May 18 (see details) Sep 21 (see details)
Wilson Always a risk (see details) Always a risk (see details)
Wolf May 31 (see details) Sep 17 (see details)
Worland May 13 (see details) Sep 24 (see details)
Wright May 31 (see details) Sep 18 (see details)
Wyarno May 28 (see details) Sep 13 (see details)
Yellowstone National Park Always a risk (see details) Always a risk (see details)
Yoder May 22 (see details) Sep 21 (see details)

Zip Codes in Wyoming

(View cities)

Zip Code City First Frost Last Frost
82001 Cheyenne Sep 24 May 18
82005 Fe Warren Afb Sep 24 May 18
82007 Cheyenne Sep 24 May 18
82009 Cheyenne Sep 24 May 18
82050 Albin Sep 24 May 20
82051 Bosler Sep 2 Jun 12
82052 Buford Sep 16 May 31
82053 Burns Sep 20 May 19
82054 Carpenter Sep 20 May 19
82055 Centennial Always a risk Always a risk
82058 Garrett Always a risk Always a risk
82059 Granite Canon Sep 16 May 31
82060 Hillsdale Sep 16 May 31
82061 Horse Creek Sep 16 May 31
82063 Jelm Always a risk Always a risk
82070 Laramie Sep 10 Jun 10
82072 Laramie Sep 2 Jun 12
82073 Laramie Sep 2 Jun 12
82081 Meriden Sep 15 May 31
82082 Pine Bluffs Sep 21 May 24
82083 Rock River Always a risk Always a risk
82084 Tie Siding Sep 10 Jun 10
82190 Yellowstone National Park Always a risk Always a risk
82201 Wheatland Sep 21 May 18
82210 Chugwater Sep 17 May 28
82212 Fort Laramie Sep 15 May 29
82213 Glendo Sep 18 May 27
82214 Guernsey Sep 18 May 19
82215 Hartville Sep 18 May 19
82217 Hawk Springs Sep 19 May 24
82218 Huntley Sep 22 May 14
82219 Jay Em Sep 16 Jun 1
82221 Lagrange Sep 15 May 31
82222 Lance Creek Sep 16 May 24
82223 Lingle Sep 18 May 20
82224 Lost Springs Sep 18 May 27
82225 Lusk Sep 16 Jun 1
82227 Manville Sep 16 Jun 1
82229 Shawnee Sep 18 May 27
82240 Torrington Sep 18 May 20
82242 Van Tassell Sep 19 May 25
82243 Veteran Sep 21 May 22
82244 Yoder Sep 21 May 22
82301 Rawlins Sep 11 Jun 10
82310 Jeffrey City Sep 9 Jun 6
82321 Baggs Sep 9 Jun 11
82322 Bairoil Sep 17 Jun 3
82323 Dixon Sep 9 Jun 14
82324 Elk Mountain Sep 5 Jun 9
82325 Encampment Sep 12 Jun 4
82327 Hanna Sep 17 May 31
82329 Medicine Bow Always a risk Always a risk
82331 Saratoga Sep 12 Jun 4
82332 Savery Sep 16 Jun 6
82334 Sinclair Sep 11 Jun 10
82335 Walcott Sep 12 Jun 4
82336 Wamsutter Sep 9 Jun 11
82401 Worland Sep 24 May 13
82410 Basin Sep 21 May 15
82411 Burlington Sep 20 May 21
82412 Byron Sep 22 May 17
82414 Cody Sep 16 May 31
82420 Cowley Sep 22 May 17
82421 Deaver Sep 17 May 21
82422 Emblem Sep 20 May 21
82423 Frannie Sep 22 May 17
82426 Greybull Sep 18 May 19
82428 Hyattville Sep 25 May 17
82430 Kirby Sep 26 May 13
82431 Lovell Sep 22 May 17
82432 Manderson Sep 21 May 15
82433 Meeteetse Always a risk Always a risk
82434 Otto Sep 20 May 21
82435 Powell Sep 18 May 27
82440 Ralston Sep 18 May 27
82441 Shell Sep 18 May 19
82442 Ten Sleep Sep 12 May 30
82443 Thermopolis Always a risk Always a risk
82450 Wapiti Sep 16 May 31
82501 Riverton Sep 17 May 25
82510 Arapahoe Sep 21 May 23
82512 Crowheart Sep 6 Jun 13
82513 Dubois Always a risk Always a risk
82514 Fort Washakie Sep 21 May 23
82515 Hudson Sep 21 May 23
82516 Kinnear Sep 23 May 23
82520 Lander Sep 21 May 23
82523 Pavillion Sep 23 May 23
82601 Casper Sep 16 May 31
82604 Casper Sep 16 May 31
82609 Casper Sep 17 May 31
82620 Alcova Sep 17 Jun 3
82630 Arminto Sep 12 May 30
82633 Douglas Sep 16 May 25
82635 Edgerton Sep 19 May 25
82636 Evansville Sep 17 May 31
82637 Glenrock Sep 20 May 20
82638 Hiland Sep 17 Jun 3
82639 Kaycee Sep 18 May 22
82640 Linch Sep 19 May 25
82642 Lysite Sep 12 May 30
82643 Midwest Sep 19 May 25
82644 Mills Sep 16 May 31
82646 Natrona Sep 16 May 31
82648 Powder River Sep 16 May 31
82649 Shoshoni Sep 26 May 13
82701 Newcastle Sep 22 May 20
82710 Aladdin Sep 25 May 15
82711 Alva Sep 15 May 24
82712 Beulah Sep 25 May 10
82714 Devils Tower Sep 10 Jun 3
82716 Gillette Sep 19 May 26
82718 Gillette Sep 18 May 31
82720 Hulett Sep 15 May 24
82721 Moorcroft Sep 10 Jun 3
82723 Osage Sep 19 May 26
82725 Recluse Sep 4 Jun 6
82727 Rozet Sep 13 May 31
82729 Sundance Sep 17 May 28
82730 Upton Sep 19 May 26
82731 Weston Sep 14 May 28
82732 Wright Sep 18 May 31
82801 Sheridan Sep 13 May 28
82831 Arvada Sep 16 May 30
82832 Banner Sep 22 May 23
82833 Big Horn Sep 17 May 31
82834 Buffalo Sep 21 May 23
82835 Clearmont Sep 23 May 20
82836 Dayton Sep 18 May 19
82837 Leiter Sep 23 May 20
82838 Parkman Sep 17 May 31
82839 Ranchester Sep 17 May 31
82842 Story Sep 17 May 31
82844 Wolf Sep 17 May 31
82845 Wyarno Sep 13 May 28
82901 Rock Springs Sep 17 Jun 1
82922 Bondurant Always a risk Always a risk
82923 Boulder Always a risk Always a risk
82925 Cora Always a risk Always a risk
82929 Little America Sep 19 Jun 3
82930 Evanston Sep 9 Jun 14
82932 Farson Always a risk Always a risk
82933 Fort Bridger Sep 9 Jun 14
82934 Granger Sep 19 Jun 3
82935 Green River Sep 19 Jun 3
82936 Lonetree Sep 9 Jun 14
82937 Lyman Sep 9 Jun 14
82938 McKinnon Sep 20 Jun 5
82939 Mountain View Sep 9 Jun 14
82941 Pinedale Always a risk Always a risk
82942 Point Of Rocks Always a risk Always a risk
82943 Reliance Always a risk Always a risk
82944 Robertson Sep 9 Jun 14
82945 Superior Always a risk Always a risk
83001 Jackson Always a risk Always a risk
83011 Kelly Always a risk Always a risk
83012 Moose Always a risk Always a risk
83013 Moran Always a risk Always a risk
83014 Wilson Always a risk Always a risk
83025 Teton Village Always a risk Always a risk
83101 Kemmerer Always a risk Always a risk
83110 Afton Always a risk Always a risk
83111 Auburn Always a risk Always a risk
83112 Bedford Always a risk Always a risk
83113 Big Piney Always a risk Always a risk
83114 Cokeville Always a risk Always a risk
83115 Daniel Always a risk Always a risk
83116 Diamondville Always a risk Always a risk
83118 Etna Always a risk Always a risk
83119 Fairview Always a risk Always a risk
83120 Freedom Sep 12 Jun 1
83121 Frontier Always a risk Always a risk
83122 Grover Always a risk Always a risk
83123 La Barge Always a risk Always a risk
83124 Opal Always a risk Always a risk
83126 Smoot Always a risk Always a risk
83127 Thayne Always a risk Always a risk
83128 Alpine Always a risk Always a risk
83414 Alta Always a risk Always a risk