Frost dates in Ada County, Idaho
The average last spring frost in Ada County falls Apr 24 to May 17 and the average first fall frost Oct 12 to Oct 22, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 7a. Places: Boise City, Eagle, Garden City, Kuna, Meridian, Star. 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 |
|---|---|---|---|---|
| 83616 | Eagle | Apr 30 | Oct 17 | 7a |
| 83634 | Kuna | Apr 24 | Oct 21 | 7a |
| 83642 | Meridian | Apr 24 | Oct 21 | 7a |
| 83646 | Meridian | Apr 29 | Oct 13 | 7a |
| 83669 | Star | Apr 30 | Oct 17 | 7a |
| 83702 | Boise City | May 17 | Oct 12 | 7a |
| 83703 | Boise City | May 17 | Oct 12 | 7a |
| 83704 | Boise City | Apr 24 | Oct 21 | 7a |
| 83705 | Boise City | Apr 24 | Oct 21 | 7a |
| 83706 | Boise City | Apr 24 | Oct 21 | 7a |
| 83709 | Boise City | Apr 24 | Oct 21 | 7a |
| 83712 | Boise City | Apr 30 | Oct 22 | 7a |
| 83713 | Boise City | Apr 24 | Oct 21 | 7a |
| 83714 | Garden City | May 17 | Oct 12 | 7a |
| 83720 | Boise City | Apr 24 | Oct 21 | 7a |
| 83725 | Boise City | Apr 24 | Oct 21 | 7a |
Nearby counties
Canyon County Gem County Boise County Owyhee County Payette County Elmore County
All Idaho counties · Download Idaho frost dates (CSV)
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