Duluth Superior, MN, September 22, 2026 —

A Frost Advisory has been issued for a significant portion of the Northland region, warning residents of potential freezing temperatures during the early morning hours of Wednesday. The advisory is scheduled to be in effect from 1:00 AM to 8:00 AM on Wednesday.

During this period, temperatures are forecast to drop to approximately 34 degrees Fahrenheit across much of the affected area. Meteorologists indicate that these temperatures are cold enough to cause frost formation on exposed surfaces.

The advisory also notes that colder conditions may be experienced in the Upper Peninsula of Michigan, suggesting that some areas within this specific sub-region could see temperatures dip even lower than the general forecast.

Residents in the Northland region are advised to take precautions to protect any sensitive outdoor vegetation or temperature-vulnerable items. The National Weather Service typically issues Frost Advisories when conditions are favorable for frost, which can damage or kill cold-sensitive plants. The exact geographic extent of “much of the Northland region” was not further detailed in the advisory notice.


Story summarized from the original created by Sue Holt on www.wdio.com, see more information here.

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