All states Idaho
Frost dates in Idaho
The typical last spring frost and first fall frost for 112 places in Idaho. Each page has the chance of frost by date and when to plant.
Places in Idaho
| Place | Last spring frost | First fall frost |
|---|---|---|
| Aberdeen | May 21 | September 20 |
| Acequia | May 16 | October 1 |
| Albion | June 5 | September 13 |
| American Falls | May 20 | September 26 |
| Arco | May 22 | September 22 |
| Arco | May 24 | October 1 |
| Ashton | May 21 | September 21 |
| Blackfoot | May 5 | October 3 |
| Bloomington | May 19 | September 21 |
| Boise City | April 24 | October 21 |
| Boise Lucky Peak Dam | April 30 | October 22 |
| Bonners Ferry | April 30 | October 4 |
| Bovill | May 16 | September 23 |
| Brownlee Dam | April 2 | November 5 |
| Bruneau | April 17 | October 17 |
| Buhl | April 25 | October 15 |
| Burley | May 7 | October 4 |
| Cambridge | May 15 | September 27 |
| Carey | June 16 | September 9 |
| Cascade | May 30 | September 19 |
| Castleford | May 17 | September 29 |
| Challis | May 14 | September 25 |
| Chubbuck | May 16 | October 2 |
| Clark Fork | May 9 | October 8 |
| Coeur d'Alene | April 22 | October 18 |
| Cottonwood | May 6 | October 13 |
| Craigmont | May 23 | September 25 |
| Crouch | June 1 | September 10 |
| Downey | May 31 | September 18 |
| Dubois | May 18 | September 30 |
| Emmett | April 30 | October 17 |
| Fairfield | June 8 | September 14 |
| Ft Hall | May 20 | September 20 |
| Garden City | May 17 | October 12 |
| Gibbonsville #2 | June 1 | September 17 |
| Glenns Ferry | May 1 | October 3 |
| Gooding | May 3 | October 1 |
| Grand View | April 28 | October 6 |
| Grangeville | May 9 | October 3 |
| Hailey | May 13 | October 2 |
| Hamer | June 3 | September 11 |
| Hazelton | May 7 | October 5 |
| Hill City | June 16 | September 6 |
| Homedale | April 24 | October 9 |
| Howe | May 24 | September 14 |
| Idaho City | June 17 | September 5 |
| Idaho Falls | May 9 | October 1 |
| Idaho Falls | June 9 | September 11 |
| Idaho Falls | June 11 | September 6 |
| Jerome | May 2 | October 14 |
| Jerome | May 1 | October 14 |
| Kamiah | April 29 | October 5 |
| Kellogg | May 14 | September 26 |
| Kimberly | May 6 | October 3 |
| Kooskia | April 30 | October 11 |
| Lava Hot Springs | May 21 | September 21 |
| Leadore | June 12 | September 6 |
| Lewiston | April 6 | October 26 |
| Lowman | June 6 | September 4 |
| Mackay | June 14 | September 8 |
| Malad City | May 22 | September 20 |
| Malta | June 1 | September 19 |
| Marsing | April 23 | October 18 |
| McCall | May 10 | October 2 |
| McCammon | May 23 | September 24 |
| Melba | May 21 | September 28 |
| Montpelier | June 17 | September 3 |
| Mountain Home | May 2 | October 8 |
| Mud Lake | June 12 | September 7 |
| Mullan | May 12 | September 30 |
| Mullan Pass Vor/Dme | June 10 | September 23 |
| Nampa | April 29 | October 13 |
| Nezperce | May 24 | September 20 |
| Oakley | May 15 | October 2 |
| Ola | May 31 | September 16 |
| Orofino | April 20 | October 20 |
| Osburn | May 5 | October 2 |
| Parma | April 27 | October 9 |
| Payette | April 19 | October 20 |
| Pierce | June 3 | September 7 |
| Plummer | May 11 | October 5 |
| Pocatello | May 2 | October 11 |
| Porthill | May 4 | September 30 |
| Powell | May 31 | September 12 |
| Preston | May 16 | September 28 |
| Prichard | May 31 | September 5 |
| Priest Rvr Exp Stn | May 20 | September 13 |
| Rexburg | May 12 | September 24 |
| Richfield | May 24 | September 26 |
| Rigby | May 9 | October 5 |
| Riggins | May 6 | October 9 |
| Rupert | May 6 | October 6 |
| Salmon | May 17 | September 24 |
| Sandpoint | May 8 | September 28 |
| Shelley | May 23 | September 20 |
| Shoshone | April 24 | October 16 |
| Silver City | May 31 | October 6 |
| Small | June 5 | September 20 |
| Soda Springs | May 29 | September 17 |
| Spirit Lake | May 22 | September 22 |
| St. Anthony | May 17 | September 22 |
| St. Maries | May 3 | October 4 |
| Stanley | May 21 | September 18 |
| Sugar City | May 29 | September 13 |
| Taylor Rch | May 11 | September 30 |
| Tetonia Exp Stn | June 15 | September 7 |
| Troy | May 15 | September 21 |
| Twin Falls | May 9 | October 4 |
| Victor | June 13 | September 9 |
| Weiser | April 23 | October 13 |
| Yellowpine | June 12 | September 11 |
| Yellowpine Bar | May 2 | October 10 |
Typical year: frost is over (spring) or has come (fall) by that date in half of years. "n/a" means frost is too rare there to give a date.