Marquette, Mich. – Drivers in Michigan’s Upper Peninsula could face dangerous visibility issues late tonight and early Monday as dense fog spreads across the region. U.S. 41 near Marquette and surrounding county roads may see rapidly changing conditions, raising risks for morning commuters.
According to the National Weather Service in Marquette, widespread fog will develop overnight Sunday into Monday morning, with pockets of dense fog dropping visibility below one-quarter mile. Conditions will improve by late morning, giving way to sunshine and highs near 77 degrees in Marquette. Motorists are urged to allow extra time, reduce speed, and keep headlights on while traveling before 9 a.m. Monday.
Sunday afternoon’s fog is expected to lift, leaving partly sunny skies and highs near 66. By Sunday night, patchy fog may return, especially in low-lying areas. Calm winds will shift south at 5 mph overnight, helping warmer air arrive for the start of the workweek.
Monday brings sunshine and highs in the upper 70s, with mostly clear skies Monday night. Tuesday remains warm and bright, though clouds increase by Wednesday as fall-like changes return. Showers are possible Wednesday night into Thursday, with a chance of thunderstorms Thursday morning.
Travelers, students, and outdoor workers should stay alert for shifting road conditions early Monday. The National Weather Service advises residents to check for updates overnight in case fog advisories are issued.
The fog threat diminishes after Monday morning, but showers midweek could still affect outdoor plans and road conditions.
Five-Day Forecast for Marquette, MI
- Monday: Sunny, high 77, low 59.
- Tuesday: Sunny, high 79, low 62.
- Wednesday: Mostly sunny, chance showers late, high 79, low 59.
- Thursday: Showers and storms possible, high 72, low 55.
- Friday: Mostly cloudy, high 61, low 56.





