Duluth, Minn. – Northern Minnesota wakes up under a Frost Advisory Sunday morning, with temperatures dipping near freezing in parts of St. Louis, Carlton, and Aitkin counties. Tender plants are at risk, and residents are urged to protect sensitive vegetation before sunrise.
According to the National Weather Service, the Frost Advisory remains in effect until 8 a.m. Sunday. Readings dropped as low as 33 degrees overnight, and another round of patchy frost is possible late tonight in low-lying areas.
By Monday, the weather takes a sharp turn. Scattered showers and thunderstorms are likely after 4 p.m., with the strongest storms capable of producing dime to quarter-size hail and wind gusts between 40 and 60 mph. Rainfall amounts could exceed a quarter of an inch, with locally heavier totals in storms.
Commuters along I-35 should expect wet travel conditions Monday evening into Tuesday morning. Gusty winds and reduced visibility in heavy rain could slow traffic, especially near Duluth and along the North Shore. Outdoor events and late-day activities may need backup plans as storms approach.
The broader NOAA precipitation outlook keeps much of Minnesota near-normal through mid-September, but locally heavier rain could develop early in the week. That contrast means a chilly, dry start quickly shifting to unsettled conditions by Monday night.
Residents should monitor updated alerts for frost overnight and be prepared for severe thunderstorm watches if conditions intensify.
Five-Day Forecast for Duluth, Minnesota
- Monday: Showers developing after 1 p.m., high 67, storms possible late
- Tuesday: Showers and storms likely, high 68, breezy
- Wednesday: Partly sunny, high 68, lighter winds
- Thursday: Slight chance of showers, high 63, mostly cloudy
- Friday: Chance of showers, high 72, breezy southeast winds
