Frost dates in Hamilton County, Iowa
The average last spring frost in Hamilton County falls Apr 26 to May 3 and the average first fall frost Oct 2 to Oct 8, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 5a. Places: Blairsburg, Ellsworth, Jewell Junction, Kamrar, Randall, Stanhope. 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 |
|---|---|---|---|---|
| 50034 | Blairsburg | May 3 | Oct 2 | 5a |
| 50075 | Ellsworth | May 3 | Oct 2 | 5a |
| 50130 | Jewell Junction | May 3 | Oct 2 | 5a |
| 50132 | Kamrar | May 3 | Oct 2 | 5a |
| 50231 | Randall | Apr 26 | Oct 8 | 5a |
| 50246 | Stanhope | May 3 | Oct 2 | 5a |
| 50249 | Stratford | May 3 | Oct 2 | 5a |
| 50271 | Williams | May 3 | Oct 2 | 5a |
| 50595 | Webster City | May 3 | Oct 2 | 5a |
Nearby counties
Wright County Hardin County Story County Webster County Boone County Franklin County
All Iowa counties · Download Iowa frost dates (CSV)
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