Idaho Climate
How Idaho's latest month ranks since 1895, the normals at its main weather stations, and the climate page for every town.
How Idaho is running
NOAA NCEI Climate at a Glance, from the nClimGrid analysis of every station, updated early each month. A rank of 1 is the highest or lowest of all years since 1895.
August 2026 in Idaho: 68.2°F (+3.0 °F against 1991-2020), the 2nd warmest in 132 years on record.
August 2026 in Idaho: 0.71 in (+0.00 in against 1991-2020), the 62nd driest in 132 years on record.
January to August 2026 in Idaho: 49.5°F (+3.4 °F against 1991-2020), the 2nd warmest in 132 years on record.
January to August 2026 in Idaho: 12.14 in (-3.03 in against 1991-2020), the 18th driest in 132 years on record.
- Warmest August
- 69.4°F in 2022
- Coolest August
- 58.6°F in 1899
- Wettest August
- 2.83 in in 1968
- Driest August
- 0.10 in in 1910
Every year since 1895
Main weather stations
Annual 1991-2020 normals at the first-order (airport and Weather Service) stations; freeze dates are the median for 32°F.
| Station | Avg high | Avg low | Precipitation | Snowfall | Last freeze | First freeze |
|---|---|---|---|---|---|---|
| Arco 17 Sw | 53.3°F | 32.7°F | 15.48 in | May 24 | October 1 | |
| Boise Air Terminal | 64.3°F | 42.0°F | 11.51 in | 17.6 in | April 24 | October 21 |
| Burley Muni AP | 61.6°F | 36.5°F | 10.30 in | May 7 | October 4 | |
| Challis AP | 57.3°F | 31.4°F | 6.93 in | May 14 | September 25 | |
| Idaho Falls 46 W | 57.6°F | 27.7°F | 8.17 in | 24.8 in | June 11 | September 6 |
| Idaho Falls Fanning Fld | 57.5°F | 30.9°F | 10.07 in | May 23 | September 20 | |
| Jerome CO AP | 61.6°F | 38.8°F | 9.90 in | May 1 | October 14 | |
| Lewiston Nez Perce CO AP | 64.2°F | 43.3°F | 12.87 in | 12.7 in | April 6 | October 26 |
| Lowell Three Rivers | 63.3°F | 40.3°F | 39.69 in | April 16 | October 25 | |
| Malad City | 61.0°F | 32.6°F | 13.10 in | May 22 | September 20 | |
| Mccall AP | 53.9°F | 29.1°F | 23.06 in | June 10 | September 10 | |
| Mullan Pass Vor/dme | 45.0°F | 32.1°F | 45.09 in | June 10 | September 23 | |
| Murphy 10 W | 61.4°F | 35.4°F | 11.30 in | May 17 | September 30 | |
| Pocatello Rgnl AP | 60.5°F | 33.5°F | 11.82 in | 38.5 in | May 23 | September 18 |
| Rexburg Madison CO AP | 55.9°F | 32.1°F | 11.97 in | May 15 | September 23 | |
| Stanley RS | 53.0°F | 21.7°F | 17.86 in | |||
| Twin Falls Sun Vly Rgnl AP | 61.2°F | 37.0°F | 10.28 in | May 9 | October 4 |
Frost dates at every station in Idaho
Counties
- Ada County
- Adams County
- Bannock County
- Bear Lake County
- Benewah County
- Bingham County
- Blaine County
- Boise County
- Bonner County
- Bonneville County
- Boundary County
- Butte County
- Camas County
- Canyon County
- Caribou County
- Cassia County
- Clark County
- Clearwater County
- Custer County
- Elmore County
- Franklin County
- Fremont County
- Gem County
- Gooding County
- Idaho County
- Jefferson County
- Jerome County
- Kootenai County
- Latah County
- Lemhi County
- Lewis County
- Lincoln County
- Madison County
- Minidoka County
- Nez Perce County
- Oneida County
- Owyhee County
- Payette County
- Power County
- Shoshone County
- Teton County
- Twin Falls County
- Valley County
- Washington County
Towns
- Aberdeen
- American Falls
- Ammon
- Arbon Valley
- Arco
- Ashton
- Athol
- Bellevue
- Blackfoot
- Boise
- Bonners Ferry
- Buhl
- Burley
- Caldwell
- Carey
- Cascade
- Challis
- Chubbuck
- Clark Fork
- Coeur d'Alene
- Conda
- Cottonwood
- Council
- Dalton Gardens
- Deary
- Dover
- Downey
- Driggs
- Dubois
- Eagle
- Eagle Foothills
- Emmett
- Fairfield
- Filer
- Fort Hall
- Franklin
- Fruitland
- Garden City
- Genesee
- Glenns Ferry
- Gooding
- Grace
- Grangeville
- Greenleaf
- Groveland
- Hagerman
- Hailey
- Hansen
- Hauser
- Hayden
- Hayden Lake
- Hazelton
- Heyburn
- Hidden Spring
- Homedale
- Horseshoe Bend
- Idaho City
- Idaho Falls
- Inkom
- Iona
- Jerome
- Juliaetta
- Kamiah
- Kellogg
- Ketchum
- Kimberly
- Kooskia
- Kootenai
- Kuna
- Lapwai
- Lewiston
- Lewiston Orchards
- Lincoln
- Malad City
- Marsing
- McCall
- McCammon
- Melba
- Menan
- Meridian
- Middleton
- Montpelier
- Moreland
- Moscow
- Mountain Home
- Moyie Springs
- Mullan
- Murphy
- Nampa
- New Plymouth
- Nezperce
- Notus
- Oakley
- Orofino
- Osburn
- Paris
- Parma
- Paul
- Payette
- Pinehurst
- Plummer
- Pocatello
- Ponderay
- Post Falls
- Potlatch
- Preston
- Priest River
- Rathdrum
- Rexburg
- Rigby
- Ririe
- Riverside
- Roberts
- Rupert
- Saint Anthony
- Saint Maries
- Salmon
- Sandpoint
- Shelley
- Shoshone
- Smelterville
- Soda Springs
- Spirit Lake
- Star
- Sugar City
- Sun Valley
- Teton
- Troy
- Twin Falls
- Tyhee
- Ucon
- Victor
- Wallace
- Weiser
- Wendell
- Wilder
Sources
Rankings: NOAA NCEI Climate at a Glance. Normals: NOAA NCEI U.S. Climate Normals, 1991-2020. Both public domain.