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

Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Hazardous Weather Conditions

Current conditions at

Grand Marais, The Bay of Grand Marais (KGNA)

Lat: 47.75°NLon: 90.34°WElev: 610ft.

15°F

-9°C

Humidity 36%
Wind Speed Calm
Barometer 30.29 in (1028.2 mb)
Dewpoint -7°F (-22°C)
Visibility NA
Last update 7 Dec 1:56 pm CST
Extended Forecast for

Grand Marais MN

Winter Weather Advisory December 8, 09:00am until December 9, 06:00am
Click here for hazard details and duration
Winter Weather Advisory

  • This Afternoon

    This Afternoon: Sunny, with a high near 12. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 12 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 4. Northwest wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 15 mph.

    Low: 4 °F

    Increasing
    Clouds

  • Monday

    Monday: A 40 percent chance of snow, mainly after 9am. Cloudy, with a high near 25. Breezy, with a southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 25 °F

    Chance Snow
    and Breezy

  • Monday Night

    Monday Night: Snow, mainly before midnight. The snow could be heavy at times. Low around 16. Breezy, with a southwest wind 10 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    Low: 16 °F

    Heavy Snow
    and Breezy
    then Chance
    Snow

  • Tuesday

    Tuesday: A 40 percent chance of snow, mainly after noon. Partly sunny, with a high near 26. Northwest wind 5 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 15 mph.

    High: 26 °F

    Chance Snow

  • Tuesday Night

    Tuesday Night: Snow likely, mainly before midnight. Mostly cloudy, with a low around 12. Blustery, with a north wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    Low: 12 °F

    Snow Likely
    and Blustery

  • Wednesday

    Wednesday: A slight chance of snow. Mostly sunny, with a high near 19. Blustery, with a north wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 19 °F

    Slight Chance
    Snow and
    Blustery

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 8. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 8 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of snow after noon. Mostly sunny, with a high near 20. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 20 °F

    Mostly Sunny
    then Slight
    Chance Snow

Detailed Forecast

This Afternoon
Sunny, with a high near 12. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Tonight
Increasing clouds, with a low around 4. Northwest wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 15 mph.
Monday
A 40 percent chance of snow, mainly after 9am. Cloudy, with a high near 25. Breezy, with a southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Snow, mainly before midnight. The snow could be heavy at times. Low around 16. Breezy, with a southwest wind 10 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
Tuesday
A 40 percent chance of snow, mainly after noon. Partly sunny, with a high near 26. Northwest wind 5 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 15 mph.
Tuesday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 12. Blustery, with a north wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Wednesday
A slight chance of snow. Mostly sunny, with a high near 19. Blustery, with a north wind 10 to 15 mph, with gusts as high as 30 mph.
Wednesday Night
Mostly cloudy, with a low around 8. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
A slight chance of snow after noon. Mostly sunny, with a high near 20. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday Night
A chance of snow, mainly after midnight. Mostly cloudy, with a low around 8. Northwest wind around 10 mph, with gusts as high as 25 mph.
Friday
A chance of snow. Mostly cloudy, with a high near 15. Blustery, with a northwest wind 10 to 15 mph, with gusts as high as 35 mph.
Friday Night
Mostly cloudy, with a low around 2. Blustery, with a northwest wind around 15 mph, with gusts as high as 35 mph.
Saturday
Mostly sunny, with a high near 12. Blustery, with a northwest wind 10 to 15 mph, with gusts as high as 30 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Marais MN
 47.74°N 90.33°W
Last Update:
2:02 pm CST Dec 7, 2025
Forecast Valid:
2pm CST Dec 7, 2025-6pm CST Dec 13, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation