Frost dates in Howard County, Iowa
The average last spring frost in Howard County falls Apr 30 to May 8 and the average first fall frost Oct 1 to Oct 9, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 4b. Places: Chester, Cresco, Elma, Lime Springs, Protivin, Riceville. 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 |
|---|---|---|---|---|
| 50466 | Riceville | Apr 30 | Oct 9 | 4b |
| 50628 | Elma | May 2 | Oct 5 | 4b |
| 52134 | Chester | May 8 | Oct 1 | 4b |
| 52136 | Cresco | May 8 | Oct 1 | 4b |
| 52155 | Lime Springs | May 8 | Oct 1 | 4b |
| 52163 | Protivin | May 8 | Oct 1 | 4b |
Nearby counties
Chickasaw County Winneshiek County Mitchell County Floyd County Bremer County Fayette County
All Iowa counties · Download Iowa frost dates (CSV)
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