Frost dates in Henry County, Illinois
The average last spring frost in Henry County falls Apr 16 to Apr 28 and the average first fall frost Oct 12 to Oct 25, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 5b. Places: Alpha, Andover, Annawan, Atkinson, Bishop Hill, Cambridge. 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 |
|---|---|---|---|---|
| 61233 | Andover | Apr 20 | Oct 20 | 5b |
| 61234 | Annawan | Apr 24 | Oct 17 | 5b |
| 61235 | Atkinson | Apr 20 | Oct 20 | 5b |
| 61238 | Cambridge | Apr 26 | Oct 12 | 5b |
| 61241 | Colona | Apr 16 | Oct 25 | 5b |
| 61254 | Geneseo | Apr 20 | Oct 20 | 5b |
| 61258 | Hooppole | Apr 20 | Oct 20 | 5b |
| 61262 | Swedona | Apr 28 | Oct 12 | 5b |
| 61273 | Orion | Apr 24 | Oct 18 | 5b |
| 61274 | Osco | Apr 20 | Oct 20 | 5b |
| 61413 | Alpha | Apr 28 | Oct 12 | 5b |
| 61419 | Bishop Hill | Apr 26 | Oct 12 | 5b |
| 61434 | Galva | Apr 26 | Oct 12 | 5b |
| 61443 | Kewanee | Apr 24 | Oct 17 | 5b |
| 61468 | Ophiem | Apr 28 | Oct 12 | 5b |
| 61490 | Woodhull | Apr 28 | Oct 12 | 5b |
Nearby counties
Rock Island County Stark County Knox County Mercer County Whiteside County Bureau County
All Illinois counties · Download Illinois frost dates (CSV)
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