Frost Advisory Issued for Duluth-Superior Region, Freezing Conditions Expected
Patchy frost is possible tonight in the Duluth-Superior region, particularly in inland areas along and north of the Iron Range, as temperatures are expected to drop into the mid-30s. Widespread frost and localized freezing conditions are anticipated Monday night.
Duluth Superior, MN, September 20, 2026 — Residents in the Duluth-Superior region are advised to prepare for frost and freezing temperatures over the next two nights. Patchy frost is a possibility tonight, particularly in inland areas situated along and north of the Iron Range.
Current forecasts indicate that temperatures could dip into the mid-30s Fahrenheit overnight. This cooler air mass poses a risk to sensitive outdoor vegetation not adequately protected.
Looking ahead to Monday night, the weather outlook suggests a more widespread impact. Meteorologists are anticipating that frost conditions will become more prevalent across the region. In addition, localized areas may experience temperatures cold enough to cause freezing.
The National Weather Service has not issued a formal frost advisory for tonight but cautions about the potential for frost in specific locations. A broader concern for widespread frost and localized freezing is noted for Monday night’s forecast.
Individuals with outdoor plants, gardens, or other cold-sensitive items are encouraged to take necessary precautions. Covering plants or bringing them indoors can help mitigate potential damage from the expected low temperatures. The public should monitor local weather updates for any changes to the forecast.
Story summarized from the original created by Lauren Bryant on www.wdio.com, see more information here.
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