Frost dates in Power County, Idaho
The average last spring frost in Power County falls May 2 to May 23 and the average first fall frost Sep 24 to Oct 11, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 6a. Places: American Falls, Arbon Valley, Rockland. 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 |
|---|---|---|---|---|
| 83204 | Arbon Valley | May 2 | Oct 11 | 6a |
| 83211 | American Falls | May 20 | Sep 26 | 6a |
| 83212 | May 23 | Sep 24 | 6a | |
| 83271 | Rockland | May 20 | Sep 26 | 6a |
Nearby counties
Bannock County Oneida County Bingham County Minidoka County Cassia County Caribou County
All Idaho counties · Download Idaho frost dates (CSV)
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