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.

40°F

4°C

Humidity 93%
Wind Speed SW 3 mph
Barometer 29.53 in (1000.5 mb)
Dewpoint 38°F (3°C)
Visibility NA
Last update 18 Jun 3:56 am CDT
Extended Forecast for

Grand Marais MN

  • Overnight

    Overnight: A 20 percent chance of showers. Patchy fog. Otherwise, mostly cloudy, with a steady temperature around 45. Northwest wind around 5 mph.

    Low: 45 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Thursday

    Thursday: A chance of showers and thunderstorms between 3pm and 4pm, then a slight chance of showers. Mostly sunny, with a high near 55. West wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 30%.

    High: 55 °F

    Partly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 39. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 39 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 53. Northwest wind 5 to 10 mph becoming southwest in the morning. Winds could gust as high as 15 mph.

    High: 53 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 39. West wind around 5 mph becoming calm in the evening.

    Low: 39 °F

    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Mostly sunny, with a high near 53. West wind around 5 mph. Chance of precipitation is 30%.

    High: 53 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 39. North wind around 5 mph.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 52. North wind around 5 mph becoming calm.

    High: 52 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers. Patchy fog. Otherwise, mostly cloudy, with a steady temperature around 45. Northwest wind around 5 mph.
Thursday
A chance of showers and thunderstorms between 3pm and 4pm, then a slight chance of showers. Mostly sunny, with a high near 55. West wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 39. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Juneteenth
Mostly sunny, with a high near 53. Northwest wind 5 to 10 mph becoming southwest in the morning. Winds could gust as high as 15 mph.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 39. West wind around 5 mph becoming calm in the evening.
Saturday
A slight chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Mostly sunny, with a high near 53. West wind around 5 mph. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 39. North wind around 5 mph.
Sunday
Mostly sunny, with a high near 52. North wind around 5 mph becoming calm.
Sunday Night
Partly cloudy, with a low around 38. Calm wind.
Monday
Mostly sunny, with a high near 53. Calm wind becoming southeast around 5 mph.
Monday Night
Partly cloudy, with a low around 39. Calm wind.
Tuesday
A slight chance of showers. Mostly cloudy, with a high near 53. Calm wind becoming south around 5 mph.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 39. Calm wind.
Wednesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 53. Calm wind becoming east around 5 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:
3:01 am CDT Jun 18, 2026
Forecast Valid:
4am CDT Jun 18, 2026-6pm CDT Jun 24, 2026
 
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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