Frost dates in Monona County, Iowa
The average last spring frost in Monona County falls Apr 25 to May 3 and the average first fall frost Oct 1 to Oct 12, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 5a to 5b. Places: Blencoe, Castana, Mapleton, Moorhead, Onawa, Rodney. 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 |
|---|---|---|---|---|
| 51010 | Castana | Apr 25 | Oct 12 | 5b |
| 51034 | Mapleton | May 3 | Oct 1 | 5a |
| 51040 | Onawa | May 1 | Oct 3 | 5a |
| 51051 | Rodney | May 3 | Oct 1 | 5a |
| 51060 | Ute | Apr 25 | Oct 12 | 5a |
| 51063 | Whiting | May 1 | Oct 3 | 5a |
| 51523 | Blencoe | May 1 | Oct 3 | 5a |
| 51558 | Moorhead | Apr 25 | Oct 12 | 5b |
| 51572 | Soldier | Apr 25 | Oct 12 | 5b |
Nearby counties
Harrison County Woodbury County Crawford County Ida County Shelby County Sac County
All Iowa counties · Download Iowa frost dates (CSV)
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