Idaho weather in January: Statewide normals and every place, NOAA 1991-2020
In January, Idaho's statewide normal high is 33°F and normal low 17°F; normal highs run from 27°F in Island Park to 44°F in Glenns Ferry (NOAA 1991-2020 normals).
- Statewide normal high
- 33°FJanuary, 1991-2020
- Statewide normal low
- 17°FJanuary, 1991-2020
- Statewide normal precipitation
- 2.83 inJanuary
- Warmest place
- 44°Fnormal high, Glenns Ferry
- Coolest place
- 27°Fnormal high, Island Park
Where is Idaho warmest and wettest in January?
Glenns Ferry has the warmest January afternoons (44°F) and Island Park the coolest (27°F). Mullan gets the most precipitation (5.90 in) and Challis the least (0.41 in). The most snow falls in Pierce (32.2 inches).
Statewide, January averaged 26.6°F in 2021, 23.9°F in 2022, 23.2°F in 2023, 25.4°F in 2024, 22.1°F in 2025, 28.3°F in 2026, against a 1991-2020 normal of 25.1°F.
| Place | High | Low | Precip. | Snow |
|---|---|---|---|---|
| Boise | 39°F | 26°F | 1.41 | 5.3 |
| Nampa | 40°F | 23°F | 1.37 | 3.4 |
| Idaho Falls | 29°F | 12°F | 0.67 | – |
| Pocatello | 34°F | 17°F | 1.11 | 8.5 |
| Coeur d'Alene | 36°F | 26°F | 3.21 | – |
| Twin Falls | 37°F | 21°F | 0.95 | – |
| Rexburg | 28°F | 13°F | 1.05 | – |
| Lewiston | 42°F | 30°F | 1.13 | 2.7 |
| Moscow | 37°F | 22°F | 3.33 | 14.5 |
| Mountain Home | 40°F | 23°F | – | – |
| Jerome | 36°F | 23°F | 1.21 | – |
| Blackfoot | 31°F | 17°F | 0.99 | 6.0 |
| Burley | 37°F | 21°F | 1.05 | – |
| Sandpoint | 34°F | 23°F | 4.33 | 20.9 |
| Emmett | 38°F | 23°F | 1.77 | 1.7 |
| Payette | 39°F | 24°F | 1.42 | – |
| Preston | 32°F | 15°F | 1.66 | 13.5 |
| Weiser | 36°F | 23°F | 1.96 | – |
| Rigby | 31°F | 15°F | 1.32 | – |
| American Falls | 35°F | 19°F | 0.96 | – |
| Buhl | 37°F | 22°F | 0.99 | – |
| McCall | 31°F | 14°F | 2.46 | – |
| St. Anthony | 28°F | 12°F | 1.65 | – |
| Grangeville | 38°F | 25°F | 1.27 | 7.9 |
| Ketchum | 31°F | 8°F | 2.25 | 27.0 |
| Salmon | 28°F | 11°F | 0.58 | 6.7 |
| Soda Springs | 32°F | 10°F | 1.35 | – |
| Homedale | 38°F | 23°F | 1.45 | – |
| Bonners Ferry | 34°F | 24°F | 2.63 | 15.0 |
| Bellevue | 35°F | 16°F | 2.06 | – |
| St. Maries | 37°F | 24°F | 4.41 | 16.3 |
| Kellogg | 37°F | 22°F | 4.29 | 15.1 |
| Sugar City | 29°F | 9°F | – | – |
| Fort Hall | 33°F | 15°F | 0.91 | 6.4 |
| Driggs | 33°F | 9°F | 1.95 | – |
| Malad City | 33°F | 15°F | 1.53 | – |
| Parma | 37°F | 23°F | 1.33 | 3.3 |
| Aberdeen | 32°F | 14°F | 0.85 | 7.7 |
| Shoshone | 37°F | 23°F | 1.57 | – |
| Paul | 33°F | 19°F | 1.29 | – |
| Glenns Ferry | 44°F | 25°F | 1.50 | – |
| Kamiah | 38°F | 26°F | 2.08 | 2.7 |
| Plummer | 37°F | 24°F | 3.79 | – |
| Cascade | 32°F | 15°F | 2.96 | 21.8 |
| Hagerman | 38°F | 22°F | 1.32 | – |
| Ashton | 29°F | 13°F | 2.31 | 19.8 |
| Council | 33°F | 18°F | 2.67 | – |
| Grace | 31°F | 13°F | 1.13 | – |
| Challis | 29°F | 11°F | 0.41 | – |
| Cottonwood | 37°F | 25°F | 1.81 | 16.3 |
| Arco | 30°F | 7°F | 0.67 | 7.0 |
| Oakley | 40°F | 21°F | 0.82 | 5.7 |
| Hazelton | 36°F | 20°F | 1.34 | – |
| McCammon | 32°F | 15°F | 1.80 | 16.8 |
| Wallace | 34°F | 24°F | 4.50 | 19.7 |
| Potlatch | 37°F | 26°F | 2.76 | 13.1 |
| Mullan | 28°F | 19°F | 5.90 | – |
| New Meadows | 30°F | 9°F | 2.85 | – |
| Downey | 32°F | 14°F | 1.08 | – |
| Kooskia | 38°F | 25°F | – | – |
| Idaho City | 35°F | 14°F | 3.16 | – |
| Dubois | 30°F | 15°F | 0.78 | 10.1 |
| Pierce | 35°F | 19°F | 5.50 | 32.2 |
| Fairfield | 27°F | 9°F | 2.11 | – |
| Mackay | 30°F | 8°F | 0.75 | – |
| Richfield | 32°F | 14°F | 1.53 | 11.5 |
| Nezperce | 35°F | 22°F | 1.77 | 7.4 |
| Grand View | 41°F | 23°F | 0.75 | – |
| Riggins | 41°F | 25°F | 1.31 | 2.1 |
| Lava Hot Springs | 32°F | 14°F | 1.99 | – |
| Winchester | 37°F | 23°F | 1.75 | 17.9 |
| Cambridge | 30°F | 17°F | 3.24 | – |
| Garden Valley | 34°F | 19°F | 4.22 | 22.8 |
| Swan Valley | 30°F | 11°F | 1.85 | – |
| Tetonia | 27°F | 8°F | 2.03 | – |
| Elk City | 35°F | 15°F | 3.39 | 29.2 |
| Castleford | 36°F | 20°F | 1.22 | – |
| Island Park | 27°F | 6°F | 3.53 | – |
| Malta | 36°F | 17°F | 0.70 | 4.2 |
| Stanley | 30°F | 4°F | 1.74 | – |
| Leadore | 30°F | 5°F | – | – |
| Minidoka | 37°F | 18°F | 1.15 | 6.7 |
| Hamer | 29°F | 7°F | 0.72 | 5.8 |
| Lowman | 34°F | 16°F | – | – |
| Bruneau | 43°F | 27°F | 0.97 | – |
| Arrowrock Dam | 37°F | 22°F | – | – |
| Bayview Model Basin | 35°F | 23°F | 2.38 | 8.7 |
| Bern | 29°F | 7°F | 1.73 | 23.3 |
| Boise Lucky Peak Dam | 40°F | 26°F | 2.02 | – |
| Brownlee Dam | 39°F | 28°F | 1.85 | – |
| Cabinet Gorge | 34°F | 24°F | 3.67 | – |
| Chilly Barton Flat | 31°F | 7°F | 0.28 | 4.6 |
| Craters Of The Moon | 25°F | 7°F | 1.96 | 20.8 |
| Deadwood Lodge | 35°F | 8°F | 4.92 | – |
| Deer Flat Dam | 40°F | 25°F | 1.22 | – |
| Dixie | 33°F | 5°F | – | – |
| Dixie N | 31°F | 5°F | 3.80 | – |
| Dworshak Fish Hatchery | 40°F | 28°F | 3.12 | 6.3 |
| Elk River | 33°F | 21°F | 5.13 | – |
| Fenn Ranger Station | 37°F | 26°F | 4.91 | 13.3 |
| Gibbonsville #2 | 29°F | 11°F | – | – |
| Headquarters | 35°F | 19°F | 4.75 | 32.8 |
| Hill City (1 mi W) | 29°F | 9°F | 2.06 | – |
| Howe | 30°F | 7°F | 0.59 | 4.7 |
| Idaho Falls (46 mi W) | 28°F | 6°F | 0.66 | 7.2 |
| Idaho Falls - Kifi | 30°F | 16°F | 1.06 | – |
| Lifton Pumping Station | 29°F | 8°F | 0.80 | 9.1 |
| Lowell Three Rivers | 40°F | 29°F | 4.89 | – |
| Massacre Rocks State Park | 35°F | 17°F | 1.48 | – |
| May (2 mi SSE) | 32°F | 6°F | 0.32 | – |
| Middle Fork Lodge | 34°F | 16°F | 1.44 | 11.9 |
| Monteview | 27°F | 5°F | 0.92 | – |
| Murphy (10 mi W) | 40°F | 22°F | 1.24 | – |
| Murphy (Desert) Hot Springs | 41°F | 18°F | 1.12 | 6.5 |
| Ola | 38°F | 15°F | 3.44 | – |
| Picabo | 32°F | 7°F | 1.78 | 13.9 |
| Porthill (1 mi SW) | 36°F | 21°F | 2.16 | – |
| Powell | 32°F | 18°F | – | – |
| Prichard (3 mi ESE) | 33°F | 21°F | 5.94 | – |
| Priest River Experiment Station | 32°F | 22°F | 3.95 | 21.8 |
| Red River Ranger Station | 35°F | 15°F | – | – |
| Rexburg BYU Idaho | 30°F | 14°F | 1.22 | – |
| Shoup | 31°F | 17°F | – | – |
| Silver City (5 mi W) | 36°F | 22°F | – | – |
| Small (6 mi N) | 29°F | 11°F | 0.85 | – |
| Swan Falls Powerhouse | 42°F | 26°F | 0.87 | – |
| Taylor Ranch | 31°F | 16°F | 1.21 | 9.4 |
| Twin Falls-KMVT | 40°F | 22°F | 1.04 | – |
| Warren | 35°F | 7°F | – | – |
| Yellowpine | 36°F | 12°F | 2.69 | – |
| Yellowpine Bar | 37°F | 21°F | 1.94 | 15.4 |
Source: NOAA NCEI nClimDiv statewide normals; NOAA NCEI 1991-2020 monthly normals for each station.