Frost dates in Alger County, Michigan
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The average last spring frost in Alger County falls May 16 to May 30 and the average first fall frost Sep 27 to Oct 14, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 5a to 5b. Places: Chatham, Grand Marais, Munising. 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 |
|---|---|---|---|---|
| 49806 | May 30 | Sep 27 | 5b | |
| 49816 | Chatham | May 27 | Sep 28 | 5a |
| 49822 | May 30 | Sep 27 | 5b | |
| 49825 | May 30 | Sep 27 | 5a | |
| 49826 | May 30 | Sep 27 | 5a | |
| 49839 | Grand Marais | May 27 | Oct 10 | 5b |
| 49862 | Munising | May 16 | Oct 14 | 5b |
| 49884 | May 23 | Oct 10 | 5a | |
| 49891 | May 27 | Sep 28 | 5a |
Nearby counties
Delta County Schoolcraft County Marquette County Luce County Dickinson County Menominee County
All Michigan counties · Download Michigan frost dates (CSV)
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