Ranked from NOAA 1991-2020 Climate Normals
Coldest Winters in Idaho
Average daily low in the coldest month, coldest counties first, with the heating degree days beside it. Figures are NOAA 1991-2020 Climate Normals from the weather station nearest each county seat, so they describe a thirty-year average rather than any single year.
Where does yours land?
Every county in America is somewhere on this scale, including the one you live in.
Idaho ranked
| # | County | Winter low | Heating degree days | Monthly to own |
|---|---|---|---|---|
| 1 | Bear Lake County | 6.7°F | 8,825 | $1,777 |
| 2 | Butte County | 7.0°F | 8,053 | $1,526 |
| 3 | Blaine County | 7.1°F | 8,380 | $4,637 |
| 4 | Camas County | 9.2°F | 8,519 | $1,870 |
| 5 | Teton County | 9.3°F | 8,414 | $4,163 |
| 6 | Caribou County | 10.0°F | 8,396 | $1,710 |
| 7 | Custer County | 10.7°F | 7,795 | $2,155 |
| 8 | Lemhi County | 10.7°F | 7,795 | $2,086 |
| 9 | Clark County | 10.9°F | 8,387 | $1,539 |
| 10 | Jefferson County | 12.1°F | 7,792 | $2,478 |
| 11 | Valley County | 12.2°F | 7,878 | $4,162 |
| 12 | Madison County | 12.9°F | 7,893 | $2,672 |
| 13 | Bonneville County | 13.2°F | 8,450 | $2,430 |
| 14 | Fremont County | 13.4°F | 8,043 | $2,105 |
| 15 | Adams County | 13.5°F | 8,665 | $2,394 |
| 16 | Lincoln County | 13.9°F | 7,337 | $1,596 |
| 17 | Idaho County | 14.0°F | 8,358 | $2,090 |
| 18 | Bannock County | 14.6°F | 7,219 | $2,058 |
| 19 | Oneida County | 14.6°F | 7,046 | $1,747 |
| 20 | Franklin County | 15.3°F | 6,994 | $2,259 |
| 21 | Gem County | 15.4°F | 6,711 | $2,656 |
| 22 | Bingham County | 16.8°F | 6,990 | $1,956 |
| 23 | Washington County | 17.0°F | 6,734 | $1,901 |
| 24 | Shoshone County | 18.0°F | 9,714 | $1,721 |
| 25 | Clearwater County | 18.5°F | 8,242 | $1,851 |
| 26 | Power County | 18.7°F | 6,507 | $1,546 |
| 27 | Twin Falls County | 20.1°F | 6,387 | $2,224 |
| 28 | Owyhee County | 20.5°F | 6,473 | $2,103 |
| 29 | Cassia County | 21.0°F | 6,285 | $1,931 |
| 30 | Minidoka County | 21.0°F | 6,285 | $1,797 |
| 31 | Lewis County | 21.2°F | 7,448 | $1,598 |
| 32 | Gooding County | 22.2°F | 5,883 | $1,775 |
| 33 | Jerome County | 22.5°F | 6,073 | $1,950 |
| 34 | Bonner County | 22.8°F | 7,087 | $3,100 |
| 35 | Boundary County | 23.7°F | 6,674 | $2,507 |
| 36 | Canyon County | 24.0°F | 5,288 | $2,594 |
| 37 | Benewah County | 24.2°F | 6,553 | $1,943 |
| 38 | Payette County | 24.3°F | 5,200 | $2,288 |
| 39 | Ada County | 25.4°F | 5,321 | $3,448 |
| 40 | Boise County | 25.4°F | 5,321 | $3,028 |
| 41 | Elmore County | 25.4°F | 5,321 | $2,109 |
| 42 | Kootenai County | 26.2°F | 6,317 | $3,357 |
| 43 | Latah County | 26.9°F | 6,253 | $2,572 |
| 44 | Nez Perce County | 29.5°F | 4,980 | $2,263 |
Every figure is modelled on the county's own median home with 20% down at 7.03%. Property tax and electricity are county and state specific; homeowners insurance uses the NAIC average premium for that state, which ranges from 0.16% of home value in Hawaii to 1.16% in Oklahoma. Maintenance and water are national estimates. Full methodology.
Nationwide
Coldest Winters across all 3,133 US counties · Every county in Idaho