Frost dates in Carroll County, Illinois
The average last spring frost in Carroll County falls Apr 13 to May 2 and the average first fall frost Oct 7 to Oct 26, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 5a to 5b. Places: Chadwick, Lake Carroll, Milledgeville, Mount Carroll, Savanna, Shannon. 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 |
|---|---|---|---|---|
| 61014 | Chadwick | May 2 | Oct 7 | 5a |
| 61046 | Lake Carroll | May 2 | Oct 7 | 5a |
| 61051 | Milledgeville | Apr 29 | Oct 7 | 5a |
| 61053 | Mount Carroll | May 2 | Oct 7 | 5a |
| 61074 | Savanna | May 2 | Oct 7 | 5a |
| 61078 | Shannon | Apr 26 | Oct 13 | 5a |
| 61285 | Thomson | Apr 13 | Oct 26 | 5b |
Nearby counties
Whiteside County Stephenson County Jo Daviess County Ogle County Lee County Winnebago County
All Illinois counties · Download Illinois frost dates (CSV)
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