Frost dates in Knox County, Illinois
The average last spring frost in Knox County falls Apr 20 to Apr 28 and the average first fall frost Oct 12 to Oct 20, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 5b. Places: Abingdon, Altona, East Galesburg, Galesburg, Gilson, Henderson. 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 |
|---|---|---|---|---|
| 61401 | Galesburg | Apr 20 | Oct 19 | 5b |
| 61402 | Galesburg | Apr 20 | Oct 19 | 5b |
| 61410 | Abingdon | Apr 21 | Oct 20 | 5b |
| 61414 | Altona | Apr 28 | Oct 12 | 5b |
| 61428 | Oak Run | Apr 21 | Oct 20 | 5b |
| 61430 | East Galesburg | Apr 21 | Oct 20 | 5b |
| 61436 | Gilson | Apr 21 | Oct 20 | 5b |
| 61439 | Henderson | Apr 20 | Oct 19 | 5b |
| 61448 | Knoxville | Apr 21 | Oct 20 | 5b |
| 61458 | Maquon | Apr 21 | Oct 20 | 5b |
| 61467 | Oneida | Apr 28 | Oct 12 | 5b |
| 61472 | Rio | Apr 20 | Oct 19 | 5b |
| 61474 | St. Augustine | Apr 22 | Oct 19 | 5b |
| 61485 | Victoria | Apr 28 | Oct 12 | 5b |
| 61488 | Wataga | Apr 20 | Oct 19 | 5b |
| 61489 | Williamsfield | Apr 21 | Oct 20 | 5b |
| 61572 | Yates City | Apr 21 | Oct 20 | 5b |
Nearby counties
Warren County Henry County Stark County Mercer County Fulton County Peoria County
All Illinois counties · Download Illinois frost dates (CSV)
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