Frost dates in Kootenai County, Idaho
The average last spring frost in Kootenai County falls Apr 22 to May 22 and the average first fall frost Sep 22 to Oct 18, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 6b. Places: Athol, Coeur d'Alene, Conkling Park, Harrison, Hayden, Post Falls. Pick a ZIP for 10% and 90% odds, soil temperature and the 7-day freeze forecast.
| ZIP | Place | Last spring frost | First fall frost | Zone |
|---|---|---|---|---|
| 83801 | Athol | May 22 | Sep 22 | 6b |
| 83810 | May 14 | Sep 26 | 6b | |
| 83814 | Rockford Bay | Apr 22 | Oct 18 | 6b |
| 83815 | Coeur d'Alene | Apr 22 | Oct 18 | 6b |
| 83833 | Harrison | Apr 22 | Oct 18 | 6b |
| 83835 | Hayden | Apr 22 | Oct 18 | 6b |
| 83842 | May 3 | Oct 4 | 6b | |
| 83854 | Post Falls | Apr 22 | Oct 18 | 6b |
| 83858 | Rathdrum | Apr 22 | Oct 18 | 6b |
| 83869 | Spirit Lake | May 22 | Sep 22 | 6b |
| 83876 | Conkling Park | May 11 | Oct 5 | 6b |
Nearby counties
Benewah County Bonner County Shoshone County Latah County Boundary County Clearwater County
All Idaho counties · Download Idaho frost dates (CSV)
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