# Counties in Idaho by average annual temperature, 2025

All 44 values come from NOAA National Centers for Environmental Information for 2025, so the places are comparable.

- Indicator id: `average_temperature_annual`
- Unit: °F
- Definition: Mean air temperature from January to December, in degrees Fahrenheit: the average of the 12 monthly mean temperatures. NOAA computes it from its climate divisional dataset (nClimDiv): station readings interpolated onto a 5 km grid and averaged over the area.
- Source: NOAA National Centers for Environmental Information, NOAA Climate at a Glance, January to December average temperature, counties (https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping)
- Publisher page: https://invokely.ai/en/publishers/noaa-ncei
- Retrieved: 2026-10-12
- Citation: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December average temperature, counties. From the NOAA Monthly U.S. Climate Divisional Database (nClimDiv), doi:10.7289/V5M32STR. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Retrieved 2026-10-12.
- Web page: https://invokely.ai/rankings/average-annual-temperature/idaho-counties

| Rank | Place | °F |
|---:|---|---:|
| 1 | Canyon County | 54.1 |
| 2 | Ada County | 53.9 |
| 3 | Payette County | 53.4 |
| 4 | Jerome County | 52.2 |
| 5 | Gooding County | 51.8 |
| 6 | Nez Perce County | 51.6 |
| 7 | Gem County | 51.3 |
| 8 | Washington County | 50.5 |
| 9 | Twin Falls County | 50.3 |
| 10 | Owyhee County | 49.9 |
| 11 | Lincoln County | 49.7 |
| 12 | Minidoka County | 49.4 |
| 13 | Elmore County | 48.9 |
| 13 | Oneida County | 48.9 |
| 15 | Cassia County | 48.8 |
| 15 | Latah County | 48.8 |
| 17 | Lewis County | 48.7 |
| 18 | Power County | 48.4 |
| 19 | Benewah County | 48.3 |
| 20 | Kootenai County | 48.1 |
| 21 | Bannock County | 47.6 |
| 22 | Franklin County | 47.3 |
| 23 | Bingham County | 47.2 |
| 24 | Jefferson County | 46.3 |
| 25 | Clearwater County | 45.7 |
| 26 | Adams County | 45.5 |
| 26 | Madison County | 45.5 |
| 28 | Bonner County | 45.4 |
| 29 | Boise County | 45.2 |
| 30 | Bonneville County | 44.8 |
| 31 | Shoshone County | 44.5 |
| 32 | Blaine County | 44.4 |
| 33 | Idaho County | 44.1 |
| 34 | Caribou County | 43.9 |
| 35 | Butte County | 43.8 |
| 36 | Boundary County | 43.2 |
| 36 | Camas County | 43.2 |
| 38 | Bear Lake County | 42.9 |
| 39 | Clark County | 42.5 |
| 40 | Fremont County | 42.2 |
| 40 | Teton County | 42.2 |
| 42 | Lemhi County | 41.6 |
| 43 | Valley County | 41 |
| 44 | Custer County | 40.2 |