Frost dates in Bonner County, Idaho
The average last spring frost in Bonner County falls May 8 to May 22 and the average first fall frost Sep 13 to Oct 8, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 6a to 6b. Places: Blanchard, Clark Fork, Coolin, Dover, Hope, Kootenai. 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 |
|---|---|---|---|---|
| 83803 | May 22 | Sep 22 | 6b | |
| 83804 | Blanchard | May 12 | Sep 21 | 6b |
| 83809 | May 22 | Sep 22 | 6b | |
| 83811 | Clark Fork | May 9 | Oct 8 | 6b |
| 83813 | May 22 | Sep 22 | 6b | |
| 83821 | Coolin | May 20 | Sep 13 | 6a |
| 83822 | Oldtown | May 12 | Sep 21 | 6a |
| 83825 | Dover | May 8 | Sep 28 | 6b |
| 83836 | Hope | May 9 | Oct 8 | 6b |
| 83840 | Kootenai | May 8 | Sep 28 | 6b |
| 83841 | Laclede | May 20 | Sep 13 | 6b |
| 83848 | May 20 | Sep 13 | 6a | |
| 83852 | Ponderay | May 8 | Sep 28 | 6b |
| 83856 | Priest River | May 20 | Sep 13 | 6a |
| 83860 | May 8 | Sep 28 | 6b | |
| 83864 | Sandpoint | May 8 | Sep 28 | 6a |
Nearby counties
Kootenai County Boundary County Shoshone County Benewah County Latah County Clearwater County
All Idaho counties · Download Idaho frost dates (CSV)
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