National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Great Lakes Snow through Friday; Watching Potential for Major Winter Storm Late Week into this Weekend

Heavy lake effect snow will continue in the Great Lakes into Wednesday before another storm brings a widespread general snow followed by another round of heavy lake effect snow. A wide-ranging winter storm will produce great swaths of heavy snow, sleet, and treacherous freezing rain from the southern Rockies/Plains and Mid-South starting Friday and shifting toward the East Coast through Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

Munising - Munising Lakeshore Observation (KP53)

Lat: 46.41°NLon: 86.65°WElev: 607ft.

-2°F

-19°C

Humidity 62%
Wind Speed SW 15 G 22 mph
Barometer 30.06 in (1019.8 mb)
Dewpoint -12°F (-24°C)
Visibility NA
Wind Chill-22°F (-30°C)
Last update 20 Jan 9:56 am EST
Extended Forecast for

Grand Marais MI

Cold Weather Advisory January 20, 10:05am until January 20, 11:00am
Click here for hazard details and duration
...
  •  
    Cold Weather Advisory January 20, 10:05am until January 20, 11:00am

    NOW until 11:00am Tue

    Cold Weather Advisory

  • Today

    High: 10 °F

    Snow Showers
    Likely

  • Tonight

    Tonight: Isolated snow showers before 10pm. Mostly cloudy, with a low around 5. Wind chill values between -5 and -10. Southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    Low: 5 °F

    Isolated Snow
    Showers then
    Mostly Cloudy

  • Wednesday

    Wednesday: Scattered snow showers. Mostly cloudy, with a high near 18. Wind chill values between -10 and zero. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 18 °F

    Scattered
    Snow Showers

  • Wednesday Night

    Wednesday Night: Snow showers likely. Mostly cloudy, with a low around 9. Wind chill values between -5 and 5. West wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    Low: 9 °F

    Snow Showers
    Likely

  • Thursday

    Thursday: Snow showers likely. Patchy blowing snow after 10am. Mostly cloudy, with a temperature rising to near 12 by 10am, then falling to around 7 during the remainder of the day. Breezy, with a west wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 70%.

    High: 12 °F⇓

    Snow Showers
    Likely and
    Patchy
    Blowing Snow

  • Thursday Night

    Thursday Night: Snow showers. Patchy blowing snow after 1am. Low around -3. Chance of precipitation is 80%.

    Low: -3 °F

    Snow Showers
    and Patchy
    Blowing Snow

  • Friday

    Friday: Snow showers likely. Mostly cloudy and cold, with a high near 3. Chance of precipitation is 70%.

    High: 3 °F

    Snow Showers
    Likely

  • Friday Night

    Friday Night: Snow showers likely, mainly before 1am. Mostly cloudy, with a low around -4.

    Low: -4 °F

    Snow Showers
    Likely

Detailed Forecast

Today
Snow showers likely, mainly before 2pm. Partly sunny and cold, with a high near 10. Wind chill values between -10 and -15. Southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. Total daytime snow accumulation of 1 to 2 inches possible.
Tonight
Isolated snow showers before 10pm. Mostly cloudy, with a low around 5. Wind chill values between -5 and -10. Southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Wednesday
Scattered snow showers. Mostly cloudy, with a high near 18. Wind chill values between -10 and zero. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Wednesday Night
Snow showers likely. Mostly cloudy, with a low around 9. Wind chill values between -5 and 5. West wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Thursday
Snow showers likely. Patchy blowing snow after 10am. Mostly cloudy, with a temperature rising to near 12 by 10am, then falling to around 7 during the remainder of the day. Breezy, with a west wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 70%.
Thursday Night
Snow showers. Patchy blowing snow after 1am. Low around -3. Chance of precipitation is 80%.
Friday
Snow showers likely. Mostly cloudy and cold, with a high near 3. Chance of precipitation is 70%.
Friday Night
Snow showers likely, mainly before 1am. Mostly cloudy, with a low around -4.
Saturday
A chance of snow showers. Mostly cloudy and cold, with a high near 6.
Saturday Night
A chance of snow showers. Mostly cloudy, with a low around -5.
Sunday
A chance of snow showers. Partly sunny and cold, with a high near 10.
Sunday Night
A chance of snow showers. Mostly cloudy, with a low around 4.
Monday
A chance of snow showers. Mostly cloudy, with a high near 14.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grand Marais MI
 46.65°N 86.01°W (Elev. 853 ft)
Last Update:
9:33 am EST Jan 20, 2026
Forecast Valid:
10am EST Jan 20, 2026-6pm EST Jan 26, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation