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

Grand Marais, The Bay of Grand Marais (KGNA)

Lat: 47.75°NLon: 90.34°WElev: 610ft.

65°F

18°C

Humidity 76%
Wind Speed Vrbl 3 mph
Barometer 29.87 in (1011.0 mb)
Dewpoint 57°F (14°C)
Visibility NA
Last update 2 Sep 1:56 am CDT
Extended Forecast for

25 Miles ESE Grand Portage MN

  • Overnight

    Overnight: Mostly cloudy, with a low around 60. West wind around 10 mph.

    Low: 60 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 72. Southwest wind around 5 mph.

    High: 72 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58. Southwest wind around 5 mph becoming north after midnight.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 69. East wind around 5 mph.

    High: 69 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 59. East wind around 10 mph.

    Low: 59 °F

    Increasing
    Clouds

  • Friday

    Friday: Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 60.

    Low: 60 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 69.

    High: 69 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy
    then Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy, with a low around 60. West wind around 10 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 72. Southwest wind around 5 mph.
Wednesday Night
Mostly clear, with a low around 58. Southwest wind around 5 mph becoming north after midnight.
Thursday
Mostly sunny, with a high near 69. East wind around 5 mph.
Thursday Night
Increasing clouds, with a low around 59. East wind around 10 mph.
Friday
Partly sunny, with a high near 66.
Friday Night
Mostly cloudy, with a low around 60.
Saturday
Partly sunny, with a high near 69.
Saturday Night
A chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 59.
Sunday
A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm. Mostly cloudy, with a high near 71.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 57.
Labor Day
Mostly cloudy, with a high near 67.
Monday Night
A chance of showers. Mostly cloudy, with a low around 55.
Tuesday
A chance of showers. Mostly cloudy, with a high near 66. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
25 Miles ESE Grand Portage MN
 47.84°N 89.17°W (Elev. 699 ft)
Last Update:
2:22 am EDT Sep 2, 2026
Forecast Valid:
3am EDT Sep 2, 2026-6pm EDT Sep 8, 2026
 
Forecast Discussion
 
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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