A sharp drop in temperatures is expected overnight across parts of Michigan and Wisconsin, prompting frost advisories that could affect plants and outdoor activities. As late August wraps up, residents in the Upper Peninsula and northern counties are being urged to take precautions ahead of an early taste of fall.
Frost Advisory in Effect for Michigan’s Upper Peninsula
The National Weather Service (NWS) in Marquette has issued a Frost Advisory for several counties in Michigan’s Upper Peninsula. This advisory will remain in effect from 2 a.m. to 9 a.m. EDT on Friday.
Affected counties include:
Baraga
Iron
Gogebic
Ontonagon
Southern Houghton
Temperatures in these areas could dip as low as 29 degrees Fahrenheit, bringing a real risk of widespread frost. Such low temperatures can cause serious damage to sensitive plants and gardens.
Northern Wisconsin Also Under Frost Advisory
Northern Wisconsin isn’t being spared from this sudden chill. The National Weather Service in Green Bay has placed Vilas County under a frost advisory from 1 a.m. to 8 a.m. CDT on Friday, with lows forecasted between 33 and 37 degrees.
Other counties under advisory include:
Lincoln
Oneida
Florence
Forest
These regions are also expected to see patchy to widespread frost, especially in low-lying and rural areas.
Ashland, Iron Counties, and Tribal Lands Included in Alert
The National Weather Service in Duluth is extending the advisory further west. From 1 a.m. to 8 a.m. CDT, frost conditions are expected in:
Ashland County
Iron County
Bad River Reservation
Lac du Flambeau Band lands
Madeline Island
This region will also face similar temperature drops, and local officials are encouraging protective actions for vegetation and vulnerable crops.
What Residents Should Do to Protect Plants
With the chance of frost being high, here are a few quick tips for gardeners and homeowners:
Cover sensitive plants with blankets, bed sheets, or frost cloths overnight.
Bring potted plants indoors, especially tropical or delicate varieties.
Avoid watering plants late in the day, as wet soil may cool faster and increase frost risk.
Monitor local forecasts in case advisories are extended or upgraded.
Fall Weather Arrives Early
While frost is more common in mid to late September, this late-August cold snap is a clear signal that the seasons are beginning to shift. Residents in the affected areas are reminded to keep jackets handy, prep homes and gardens for cooler nights, and check weather alerts regularly.
