Frost dates in Delaware County, Iowa
The average last spring frost in Delaware County falls Apr 28 to May 3 and the average first fall frost Oct 4 to Oct 10, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 4b to 5a. Places: Delaware, Delhi, Dundee, Dyersville, Earlville, Greeley. 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 |
|---|---|---|---|---|
| 52036 | Delaware | May 3 | Oct 4 | 4b |
| 52038 | Dundee | May 3 | Oct 4 | 5a |
| 52040 | Dyersville | Apr 28 | Oct 10 | 5a |
| 52041 | Earlville | May 3 | Oct 4 | 5a |
| 52050 | Greeley | May 3 | Oct 4 | 4b |
| 52057 | Manchester | May 3 | Oct 4 | 5a |
| 52223 | Delhi | May 3 | Oct 4 | 5a |
| 52237 | Hopkinton | Apr 28 | Oct 10 | 5a |
| 52330 | Ryan | May 3 | Oct 7 | 5a |
Nearby counties
Dubuque County Buchanan County Clayton County Jones County Linn County Fayette County
All Iowa counties · Download Iowa frost dates (CSV)
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