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

Grand Marais/Cook County Airport (KCKC)

Lat: 47.84°NLon: 90.39°WElev: 1784ft.

Overcast

48°F

9°C

Humidity 82%
Wind Speed S 5 mph
Barometer 30.17 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 3 Oct 10:55 am CDT
Extended Forecast for

Grand Portage MN

  • Today

    Today: Showers likely, mainly before 5pm. Cloudy, with a high near 55. Light south wind becoming southeast 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 55 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers, mainly before 11pm. Low around 43. Breezy, with a south wind 5 to 15 mph becoming northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 43 °F

    Showers and
    Breezy then
    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 59. Breezy, with a northwest wind around 15 mph, with gusts as high as 30 mph.

    High: 59 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Areas of frost after 3am. Otherwise, mostly clear, with a low around 34. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 34 °F

    Mostly Clear
    then Areas
    Frost

  • Monday

    Monday: Areas of frost before 8am. Otherwise, sunny, with a high near 54. Northwest wind around 5 mph becoming southwest in the afternoon. Winds could gust as high as 15 mph.

    High: 54 °F

    Areas Frost
    then Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 37. South wind around 5 mph, with gusts as high as 15 mph.

    Low: 37 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 60. Breezy, with a south wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 60 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 46. West wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 46 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers. Sunny, with a high near 64. West wind 5 to 10 mph, with gusts as high as 25 mph.

    High: 64 °F

    Slight Chance
    Showers

Detailed Forecast

Today
Showers likely, mainly before 5pm. Cloudy, with a high near 55. Light south wind becoming southeast 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Showers, mainly before 11pm. Low around 43. Breezy, with a south wind 5 to 15 mph becoming northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Sunny, with a high near 59. Breezy, with a northwest wind around 15 mph, with gusts as high as 30 mph.
Sunday Night
Areas of frost after 3am. Otherwise, mostly clear, with a low around 34. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Areas of frost before 8am. Otherwise, sunny, with a high near 54. Northwest wind around 5 mph becoming southwest in the afternoon. Winds could gust as high as 15 mph.
Monday Night
Partly cloudy, with a low around 37. South wind around 5 mph, with gusts as high as 15 mph.
Tuesday
Partly sunny, with a high near 60. Breezy, with a south wind 10 to 15 mph, with gusts as high as 30 mph.
Tuesday Night
Partly cloudy, with a low around 46. West wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
A slight chance of showers. Sunny, with a high near 64. West wind 5 to 10 mph, with gusts as high as 25 mph.
Wednesday Night
A slight chance of showers. Partly cloudy, with a low around 41. West wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday
Mostly sunny, with a high near 59. West wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 39. Northwest wind around 5 mph, with gusts as high as 15 mph.
Friday
Mostly sunny, with a high near 56. Northwest wind 5 to 10 mph becoming south in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Portage MN
 47.98°N 89.69°W
Last Update:
10:26 am CDT Oct 3, 2026
Forecast Valid:
11am CDT Oct 3, 2026-6pm CDT Oct 9, 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