Frost dates in Jefferson County, Illinois
The average last spring frost in Jefferson County falls Apr 4 to Apr 11 and the average first fall frost Oct 22 to Oct 28, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 6b. Places: Belle Rive, Bluford, Bonnie, Dix, Ina, Mount Vernon. 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 |
|---|---|---|---|---|
| 62810 | Belle Rive | Apr 11 | Oct 22 | 6b |
| 62814 | Bluford | Apr 11 | Oct 22 | 6b |
| 62816 | Bonnie | Apr 4 | Oct 28 | 6b |
| 62830 | Dix | Apr 9 | Oct 24 | 6b |
| 62846 | Ina | Apr 4 | Oct 28 | 6b |
| 62864 | Mount Vernon | Apr 11 | Oct 22 | 6b |
| 62872 | Opdyke | Apr 11 | Oct 22 | 6b |
| 62883 | Apr 6 | Oct 22 | 6b | |
| 62889 | Apr 11 | Oct 22 | 6b | |
| 62893 | Walnut Hill | Apr 9 | Oct 24 | 6b |
| 62894 | Waltonville | Apr 4 | Oct 28 | 6b |
| 62898 | Woodlawn | Apr 9 | Oct 24 | 6b |
Nearby counties
Franklin County Washington County Marion County Hamilton County Wayne County Perry County
All Illinois counties · Download Illinois frost dates (CSV)
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