Frost dates in Hamilton County, Illinois
The average last spring frost in Hamilton County falls Apr 11 and the average first fall frost Oct 21, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 6b to 7a. Places: Broughton, Dahlgren, McLeansboro. 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 |
|---|---|---|---|---|
| 62817 | Broughton | Apr 11 | Oct 21 | 7a |
| 62828 | Dahlgren | Apr 11 | Oct 21 | 6b |
| 62829 | Apr 11 | Oct 21 | 6b | |
| 62859 | McLeansboro | Apr 11 | Oct 21 | 6b |
Nearby counties
Saline County White County Franklin County Gallatin County Wayne County Jefferson County
All Illinois counties · Download Illinois frost dates (CSV)
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