Frost dates in Butler County, Iowa
The average last spring frost in Butler County falls Apr 27 and the average first fall frost Oct 8 to Oct 10, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 5a. Places: Allison, Aplington, Bristow, Clarksville, Dumont, Greene. 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 |
|---|---|---|---|---|
| 50602 | Allison | Apr 27 | Oct 8 | 5a |
| 50604 | Aplington | Apr 27 | Oct 8 | 5a |
| 50608 | Apr 27 | Oct 8 | 5a | |
| 50611 | Bristow | Apr 27 | Oct 8 | 5a |
| 50619 | Clarksville | Apr 27 | Oct 8 | 5a |
| 50625 | Dumont | Apr 27 | Oct 8 | 5a |
| 50636 | Greene | Apr 27 | Oct 8 | 5a |
| 50649 | Apr 27 | Oct 8 | 5a | |
| 50660 | New Hartford | Apr 27 | Oct 10 | 5a |
| 50665 | Parkersburg | Apr 27 | Oct 8 | 5a |
| 50670 | Shell Rock | Apr 27 | Oct 8 | 5a |
Nearby counties
Franklin County Grundy County Bremer County Floyd County Black Hawk County Hardin County
All Iowa counties · Download Iowa frost dates (CSV)
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