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)
Never miss a frost: get The Dial
Weekly yard timing, plus frost and soil-temperature alerts for your ZIP code.
- Freeze alerts
- Soil-temp heads-up
- Weekly yard to-dos
Free. One weekly email plus alerts when your ZIP has a frost or a soil-temperature change worth acting on. After you submit, Kit (our email provider) sends a confirmation email: check your email and click the link to confirm. You aren't subscribed until you do. We collect only your email address and ZIP, sent to Kit to deliver The Dial. Unsubscribe anytime.