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

Hazardous Weather Conditions

Current conditions at

Grand Marais/Cook County Airport (KCKC)

Lat: 47.84°NLon: 90.39°WElev: 1784ft.

Partly Cloudy

64°F

18°C

Humidity 68%
Wind Speed SE 6 mph
Barometer 29.99 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 29 Aug 11:15 am CDT
Extended Forecast for

Grand Portage MN

  • Today

    Today: Mostly cloudy, with a high near 69. South wind around 5 mph.

    High: 69 °F

    Mostly Cloudy

  • Tonight

    Tonight: Patchy fog between 9pm and 1am. Otherwise, mostly cloudy, with a low around 56. Calm wind becoming northeast around 5 mph.

    Low: 56 °F

    Patchy Fog

  • Sunday

    Sunday: Mostly cloudy, with a high near 68. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 68 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Showers likely after 1am. Mostly cloudy, with a low around 57. Northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 57 °F

    Mostly Cloudy
    then Showers
    Likely

  • Monday

    Monday: Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers and thunderstorms after 1pm. Cloudy, with a high near 72. East wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 72 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 59. Northeast wind around 5 mph becoming calm.

    Low: 59 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 78. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 78 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 58. West wind around 5 mph, with gusts as high as 15 mph.

    Low: 58 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 76. Northwest wind around 5 mph becoming southwest in the afternoon.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 69. South wind around 5 mph.
Tonight
Patchy fog between 9pm and 1am. Otherwise, mostly cloudy, with a low around 56. Calm wind becoming northeast around 5 mph.
Sunday
Mostly cloudy, with a high near 68. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Showers likely after 1am. Mostly cloudy, with a low around 57. Northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers and thunderstorms after 1pm. Cloudy, with a high near 72. East wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 59. Northeast wind around 5 mph becoming calm.
Tuesday
Partly sunny, with a high near 78. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 58. West wind around 5 mph, with gusts as high as 15 mph.
Wednesday
Mostly sunny, with a high near 76. Northwest wind around 5 mph becoming southwest in the afternoon.
Wednesday Night
Partly cloudy, with a low around 56. West wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 72. North wind around 5 mph becoming southeast in the afternoon.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 56. East wind around 5 mph becoming calm.
Friday
Mostly sunny, with a high near 72. East wind 5 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Portage MN
 47.96°N 89.69°W
Last Update:
9:17 am CDT Aug 29, 2026
Forecast Valid:
11am CDT Aug 29, 2026-6pm CDT Sep 4, 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