Weather
Minnesota Weather: Duluth, Northland Brace for Sub-Freezing Temperatures Tuesday Morning as Frost Advisories Loom
Duluth, Minnesota – Temperatures are set to plunge into the low to mid 30s by Tuesday morning, creating a widespread risk for frost across the Northland.…
By Natalie Rhodes · 2026-09-21T18:42:12.668Z
Duluth, Minnesota – Temperatures are set to plunge into the low to mid 30s by Tuesday morning, creating a widespread risk for frost across the Northland. Gardeners and those with sensitive outdoor plants should take immediate precautions to protect vegetation tonight as the mercury drops.
According to the National Weather Service in Duluth , conditions remain chilly into Wednesday morning with lows generally in the mid to upper 30s. While inland areas face the most immediate risk of freezing temperatures, slightly warmer conditions are expected near the Lake Superior shoreline.
As the region moves into the midweek period, persistent cool air will dominate the landscape. Farmers and homeowners should remain alert for official Frost Advisories or Freeze Warnings, which may be issued as the cold pattern continues to settle over northern Minnesota and Wisconsin.
Watch for the coldest temperatures to occur during the overnight hours. The primary concern shifts to monitoring how quickly the ground warms each morning and whether vegetation protection needs to be extended beyond Wednesday.