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

Hazardous Weather Conditions

Current conditions at

Grand Marais, The Bay of Grand Marais (KGNA)

Lat: 47.75°NLon: 90.34°WElev: 610ft.

63°F

17°C

Humidity 90%
Wind Speed Calm
Barometer 30.10 in (1018.8 mb)
Dewpoint 60°F (16°C)
Visibility NA
Last update 7 Sep 12:56 am CDT
Extended Forecast for

Grand Marais MN

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 63. Calm wind.

    Low: 63 °F

    Mostly Cloudy

  • Labor Day

    Labor Day: A 30 percent chance of showers, mainly before 8am. Mostly cloudy, with a high near 69. Calm wind becoming east around 5 mph in the morning. Winds could gust as high as 15 mph.

    High: 69 °F

    Chance
    Showers then
    Mostly Cloudy

  • Monday Night

    Monday Night: A chance of showers, then showers and possibly a thunderstorm after 1am. Low around 60. East wind 5 to 10 mph becoming south after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 60 °F

    Chance
    Showers then
    Showers

  • Tuesday

    Tuesday: Showers and thunderstorms likely before 1pm, then a chance of showers. Patchy fog before 2pm. Otherwise, mostly cloudy, with a high near 72. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 72 °F

    Showers
    Likely and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 59. West wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 59 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 69. Breezy, with a west wind 10 to 15 mph, with gusts as high as 35 mph.

    High: 69 °F

    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 51. Breezy, with a west wind 5 to 15 mph, with gusts as high as 30 mph.

    Low: 51 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Thursday

    Thursday: Sunny, with a high near 69. Northwest wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 15 mph.

    High: 69 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 55. Calm wind becoming southwest around 5 mph.

    Low: 55 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 63. Calm wind.
Labor Day
A 30 percent chance of showers, mainly before 8am. Mostly cloudy, with a high near 69. Calm wind becoming east around 5 mph in the morning. Winds could gust as high as 15 mph.
Monday Night
A chance of showers, then showers and possibly a thunderstorm after 1am. Low around 60. East wind 5 to 10 mph becoming south after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
Showers and thunderstorms likely before 1pm, then a chance of showers. Patchy fog before 2pm. Otherwise, mostly cloudy, with a high near 72. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Partly cloudy, with a low around 59. West wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 69. Breezy, with a west wind 10 to 15 mph, with gusts as high as 35 mph.
Wednesday Night
Partly cloudy, with a low around 51. Breezy, with a west wind 5 to 15 mph, with gusts as high as 30 mph.
Thursday
Sunny, with a high near 69. Northwest wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 15 mph.
Thursday Night
Partly cloudy, with a low around 55. Calm wind becoming southwest around 5 mph.
Friday
Mostly sunny, with a high near 75. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 55. West wind around 5 mph, with gusts as high as 20 mph.
Saturday
A chance of showers. Mostly sunny, with a high near 69. Breezy, with a west wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday Night
A slight chance of showers. Mostly cloudy, with a low around 49. Northwest wind 5 to 10 mph, with gusts as high as 25 mph.
Sunday
A slight chance of showers. Partly sunny, with a high near 64. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Marais MN
 47.76°N 90.33°W
Last Update:
1:21 am CDT Sep 7, 2026
Forecast Valid:
1am CDT Sep 7, 2026-6pm CDT Sep 13, 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