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.

33°F

1°C

Humidity 100%
Wind Speed Calm
Barometer 29.76 in (1008.8 mb)
Dewpoint 33°F (1°C)
Visibility NA
Last update 16 Apr 12:56 am CDT
Extended Forecast for

Grand Marais MN

Dense Fog Advisory until April 16, 10:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until April 16, 10:00am

    NOW until 10:00am Thu

    Dense Fog Advisory

  • Overnight

    Low: 35 °F

    Areas Dense
    Fog

  • Thursday

    Thursday: Areas of dense fog. Otherwise, partly sunny, with a high near 39. Calm wind becoming southwest around 5 mph.

    High: 39 °F

    Areas Dense
    Fog

  • Thursday Night

    Thursday Night: A 20 percent chance of rain after 3am. Patchy fog before 10pm. Otherwise, mostly cloudy, with a low around 38. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 38 °F

    Patchy Fog
    then Slight
    Chance Rain

  • Friday

    Friday: Rain and possibly a thunderstorm, mainly after 4pm. Patchy fog between 9am and 10am. High near 49. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 49 °F

    Patchy Fog
    then Rain

  • Friday Night

    Friday Night: A chance of rain and thunderstorms before 7pm, then a chance of rain between 7pm and 1am. Mostly cloudy, with a low around 27. Blustery, with a northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.

    Low: 27 °F

    Blustery.
    Chance
    T-storms then
    Chance Rain

  • Saturday

    Saturday: Partly sunny, with a high near 34. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 34 °F

    Partly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 24. Blustery, with a northwest wind around 15 mph, with gusts as high as 30 mph.

    Low: 24 °F

    Mostly Cloudy
    and Blustery

  • Sunday

    Sunday: Mostly sunny, with a high near 38. Breezy, with a northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 38 °F

    Partly Sunny
    and Breezy
    then Mostly
    Sunny

Detailed Forecast

Overnight
Areas of dense fog. Otherwise, mostly cloudy, with a low around 35. Calm wind.
Thursday
Areas of dense fog. Otherwise, partly sunny, with a high near 39. Calm wind becoming southwest around 5 mph.
Thursday Night
A 20 percent chance of rain after 3am. Patchy fog before 10pm. Otherwise, mostly cloudy, with a low around 38. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Friday
Rain and possibly a thunderstorm, mainly after 4pm. Patchy fog between 9am and 10am. High near 49. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
A chance of rain and thunderstorms before 7pm, then a chance of rain between 7pm and 1am. Mostly cloudy, with a low around 27. Blustery, with a northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
Saturday
Partly sunny, with a high near 34. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Mostly cloudy, with a low around 24. Blustery, with a northwest wind around 15 mph, with gusts as high as 30 mph.
Sunday
Mostly sunny, with a high near 38. Breezy, with a northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 27. Northwest wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 43. South wind 5 to 10 mph, with gusts as high as 15 mph.
Monday Night
Mostly cloudy, with a low around 37. South wind around 10 mph becoming west after midnight. Winds could gust as high as 20 mph.
Tuesday
Mostly sunny, with a high near 49. West wind around 10 mph, with gusts as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 35. Northwest wind around 5 mph.
Wednesday
Sunny, with a high near 46. North wind 5 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 15 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grand Marais MN
 47.74°N 90.33°W
Last Update:
11:37 pm CDT Apr 15, 2026
Forecast Valid:
1am CDT Apr 16, 2026-6pm CDT Apr 22, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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