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Frost dates in Bay County, Michigan

Lake Michigan shoreline below the bluffs at Sleeping Bear Dunes in winter, Michigan
Photo: Isabella Rick, CC BY 3.0, via Wikimedia Commons

The average last spring frost in Bay County falls Apr 26 to May 5 and the average first fall frost Oct 10 to Oct 20, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 5b to 6a. Places: Auburn, Bay City, Essexville, Pinconning. Pick a ZIP for 10% and 90% odds, soil temperature and the 7-day freeze forecast.

ZIPPlaceLast spring frostFirst fall frostZone
48611AuburnMay 3Oct 146a
48613May 5Oct 105b
48631May 3Oct 146a
48634May 3Oct 146a
48650PinconningMay 5Oct 106a
48706Bay CityMay 3Oct 146a
48708Bay CityApr 27Oct 206a
48710Apr 26Oct 176a
48732EssexvilleApr 27Oct 206a
48747Apr 27Oct 206a

Nearby counties

Midland County Saginaw County Arenac County Gladwin County Tuscola County Gratiot County

All Michigan counties · Download Michigan frost dates (CSV)