Frost dates in Benton County, Iowa
The average last spring frost in Benton County falls Apr 27 to May 3 and the average first fall frost Oct 3 to Oct 11, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 5a. Places: Atkins, Belle Plaine, Blairstown, Dysart, Garrison, Keystone. 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 |
|---|---|---|---|---|
| 52206 | Atkins | Apr 27 | Oct 11 | 5a |
| 52208 | Belle Plaine | Apr 28 | Oct 10 | 5a |
| 52209 | Blairstown | Apr 28 | Oct 10 | 5a |
| 52224 | Dysart | May 3 | Oct 3 | 5a |
| 52229 | Garrison | May 3 | Oct 3 | 5a |
| 52249 | Keystone | Apr 28 | Oct 10 | 5a |
| 52257 | Luzerne | Apr 28 | Oct 10 | 5a |
| 52313 | Mount Auburn | May 3 | Oct 3 | 5a |
| 52315 | Newhall | May 3 | Oct 3 | 5a |
| 52318 | Norway | Apr 27 | Oct 11 | 5a |
| 52332 | Shellsburg | May 3 | Oct 3 | 5a |
| 52345 | Urbana | May 3 | Oct 3 | 5a |
| 52346 | Van Horne | May 3 | Oct 3 | 5a |
| 52349 | Vinton | May 3 | Oct 3 | 5a |
| 52351 | Walford | Apr 27 | Oct 11 | 5a |
| 52354 | Watkins | Apr 27 | Oct 11 | 5a |
Nearby counties
Linn County Iowa County Tama County Black Hawk County Poweshiek County Buchanan County
All Iowa counties · Download Iowa frost dates (CSV)
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