Frost dates in Putnam County, Illinois
The average last spring frost in Putnam County falls Apr 20 to Apr 24 and the average first fall frost Oct 17 to Oct 18, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 5b. Places: Granville, Hennepin, Magnolia, Mark, McNabb, Standard. 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 |
|---|---|---|---|---|
| 61326 | Granville | Apr 24 | Oct 17 | 5b |
| 61327 | Hennepin | Apr 24 | Oct 17 | 5b |
| 61335 | McNabb | Apr 24 | Oct 17 | 5b |
| 61336 | Magnolia | Apr 20 | Oct 17 | 5b |
| 61340 | Mark | Apr 24 | Oct 17 | 5b |
| 61363 | Standard | Apr 24 | Oct 18 | 5b |
| 61560 | Apr 24 | Oct 17 | 5b |
Nearby counties
Marshall County Bureau County LaSalle County Stark County Woodford County Lee County
All Illinois counties · Download Illinois frost dates (CSV)
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