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.

52°F

11°C

Humidity 75%
Wind Speed Calm
Barometer 30.16 in (1021.5 mb)
Dewpoint 44°F (7°C)
Visibility NA
Last update 23 Jun 4:56 pm CDT
Extended Forecast for

Grand Marais MN

  • This Afternoon

    This Afternoon: A 20 percent chance of showers. Partly sunny, with a high near 58. Calm wind.

    High: 58 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Showers likely before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 40. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 40 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly before 2pm. Mostly cloudy, with a high near 52. Breezy, with an east wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 52 °F

    Showers
    Likely then
    Chance
    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers between 11pm and midnight. Mostly cloudy, with a low around 40. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 40 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 54. North wind around 5 mph becoming calm.

    High: 54 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 55. Calm wind.

    High: 55 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 56. East wind 5 to 10 mph.

    High: 56 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers. Partly sunny, with a high near 58. Calm wind.
Tonight
Showers likely before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 40. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers and thunderstorms likely, mainly before 2pm. Mostly cloudy, with a high near 52. Breezy, with an east wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A 20 percent chance of showers between 11pm and midnight. Mostly cloudy, with a low around 40. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 54. North wind around 5 mph becoming calm.
Thursday Night
Partly cloudy, with a low around 40. Calm wind.
Friday
Partly sunny, with a high near 55. Calm wind.
Friday Night
Mostly cloudy, with a low around 40. Calm wind.
Saturday
Partly sunny, with a high near 56. East wind 5 to 10 mph.
Saturday Night
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 43. Breezy, with an east wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 57. Breezy, with an east wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 45. Breezy, with an east wind 10 to 20 mph, with gusts as high as 30 mph.
Monday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 61. Breezy, with an east wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 47. East wind 5 to 10 mph becoming north after midnight. Winds could gust as high as 15 mph.
Tuesday
A slight chance of showers. Partly sunny, with a high near 63. West wind 5 to 10 mph becoming south in the afternoon.
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:
3:21 pm CDT Jun 23, 2026
Forecast Valid:
5pm CDT Jun 23, 2026-6pm CDT Jun 30, 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