Frost dates in Worth County, Iowa
The average last spring frost in Worth County falls Apr 29 to May 4 and the average first fall frost Oct 1 to Oct 7, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 5a. Places: Bolan, Fertile, Grafton, Hanlontown, Joice, Manly. 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 |
|---|---|---|---|---|
| 50434 | Fertile | Apr 30 | Oct 7 | 5a |
| 50440 | Grafton | May 4 | Oct 4 | 5a |
| 50444 | Hanlontown | May 3 | Oct 1 | 5a |
| 50446 | Joice | Apr 30 | Oct 7 | 5a |
| 50448 | Bolan | May 4 | Oct 4 | 5a |
| 50456 | Manly | Apr 29 | Oct 7 | 5a |
| 50459 | Northwood | May 4 | Oct 4 | 5a |
Nearby counties
Cerro Gordo County Winnebago County Mitchell County Floyd County Hancock County Franklin County
All Iowa counties · Download Iowa frost dates (CSV)
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