Frost Dates in Wyoming

Afton June 20 – September 1 Albin May 14 – October 2 Alta 1 Nnw June 14 – September 11 Archer May 21 – September 24 Atlantic City Always frozen Baggs June 1 – September 18 Basin April 28 – October 10 Bates Creek #2 May 22 – September 26 Bedford 3 Se Always frozen Big Horn May 17 – September 28 Big Piney Marbleton AP Always frozen Billy Creek May 19 – September 21 Bitter Creek 4 Ne June 1 – September 16 Black Mtn May 14 – October 3 Bondurant Always frozen Boulder Rearing Stn Always frozen Boysen Dam May 5 – October 7 Buckboard Marina May 24 – September 23 Buffalo May 24 – September 21 Buffalo Bill Dam May 17 – October 3 Buffalo Johnson Co AP May 13 – October 1 Burgess Junction Always frozen Burris June 1 – September 14 Carpenter 3n May 14 – September 26 Casper 1sw May 12 – October 1 Casper Natrona Co AP May 26 – September 22 Casper Wwtp May 10 – September 29 Centennial 1ne June 2 – September 19 Cheyenne May 12 – October 1 Cheyenne Wfo May 14 – October 1 Chugwater May 18 – September 24 Church Buttes Gas Plt May 25 – September 27 Clark 3ne May 18 – September 22 Clearmont 5 Sw May 24 – September 16 Cody May 12 – October 1 Cody 12se May 24 – September 15 Cody 21 Sw May 29 – September 18 Colony May 7 – October 3 CoraAlways frozen Daniel Fish Hatchery Always frozen Darwin Rch Always frozen Dayton May 24 – September 18 Deaver May 6 – October 1 Devils Twr #2 May 23 – September 20 Dillinger May 25 – September 17 Diversion Dam May 21 – September 20 Double Four Rch June 2 – September 9 Douglas 1 Se May 19 – September 23 Douglas Converse Co AP May 23 – September 22 DuboisAlways frozen Dull Ctr 1se May 15 – September 27 Echeta 2 Nw May 21 – September 23 Elk Mtn May 28 – September 13 Emblem May 12 – September 28 Evanston 1 E June 12 – September 12 Evanston Burns Fld June 3 – September 25 Farson 2nne Always frozen Fontenelle Dam Always frozen Fossil Butte Always frozen Gillette 4se May 15 – October 1 Gillette Campbell AP May 22 – September 25 Glendo 6ne May 25 – September 15 Glendo Rsvr Usbr May 9 – October 5 Green Rvr May 24 – September 22 Greybull May 11 – September 23 Greybull S Big Horn AP May 4 – October 1 Guernsey 2nw May 7 – October 6 Guernsey Dam #2 May 11 – October 3 Heart Mtn May 15 – September 25 Hecla 1e May 27 – September 19 Hulett May 17 – September 23 JacksonAlways frozen Jeffrey City June 1 – September 13 Kaycee May 18 – September 25 Kemmerer 2n Always frozen La Barge June 9 – September 4 La Grange May 14 – October 1 Lake Yellowstone Always frozen Lamar RsAlways frozen Lance Creek 11nne May 17 – September 25 Lander 11 Sse May 13 – October 2 Lander Hunt Fld AP May 18 – September 27 Laramie 2 Nw June 7 – September 4 Laramie 4se May 22 – September 28 Laramie Rgnl AP June 2 – September 15 Leiter 9n May 14 – September 30 Leo 6 Sw May 20 – September 28 Lingle 2wsw May 20 – September 22 Lovell May 9 – September 29 Lusk 2 Sw May 23 – September 20 Lusk 25ne May 14 – October 1 Medicine Bow June 1 – September 8 Midwest May 22 – September 22 Moorcroft 3s May 22 – September 28 Moose June 20 – August 31 Moose 1 Nne June 24 – August 28 Moran 5wnw Always frozen Mtn View June 14 – September 9 Muddy Gap May 21 – September 27 Newcastle May 13 – October 3 Old Faithful Always frozen Old Ft Laramie May 14 – September 26 PahaskaAlways frozen Pathfinder Dam May 9 – October 7 Pavillion May 14 – September 30 Phillips May 21 – September 21 Pine Bluffs 1ese May 10 – October 1 Pine Bluffs 5w May 16 – September 27 PinedaleAlways frozen Powder River #2 May 23 – September 20 Powder Rvr (School) May 30 – September 22 Powell Fld Stn May 19 – September 20 Rawlins 1n May 17 – October 2 Rawlins Muni AP June 1 – September 15 Redbird May 16 – September 24 Riverton May 12 – September 24 Riverton May 16 – September 28 Rochelle 7ene May 25 – September 14 Rock Springs AP May 22 – September 28 Rock Springs Fire Dept May 24 – September 24 Sage 4 Nnw Always frozen Saratoga June 2 – September 12 Saratoga 4n June 12 – September 7 Seminoe Rsvr Usbr May 12 – October 4 Shell May 16 – September 24 Sheridan Co AP May 21 – September 23 Sheridan Fld Stn May 18 – September 24 Shirley Basin Always frozen Shoshoni May 7 – October 3 Snake Rvr Always frozen South Pass City Always frozen Story May 24 – September 23 Sundance May 21 – September 25 Sundance 8 Nnw May 23 – September 24 Sunshine 3ne Always frozen Sybille Rsch Unit May 22 – September 24 Tensleep 16sse May 22 – September 18 Tensleep 4ne May 10 – October 1 Thermopolis May 5 – October 5 Thermopolis 21wnw May 29 – September 17 Thermopolis 9ne May 24 – September 16 Torrington 29n May 17 – September 28 Torrington Exp Farm May 14 – September 24 Torrington Muni AP May 11 – September 29 Tower Falls Always frozen Upton May 20 – September 23 Wamsutter June 5 – September 14 Wapiti 1wsw May 27 – September 25 Weston 1 E May 23 – September 18 Whalen Dam Usbr May 7 – October 3 Wheatland 4 N May 19 – September 22 Worland May 13 – September 26 Worland May 4 – October 1 Wright 12w May 25 – September 23 Yellowstone Lake Always frozen Yellowstone Np E Ent Always frozen Yellowstone Park Mammoth June 3 – September 14 Yoder 5 W May 15 – September 27