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

Heavy to Excessive Rainfall for the Southwest;

Tropical moisture from Priscilla will bring a multi-day thunderstorm, widespread heavy rainfall and flash flooding event across the Southwest/Four Corners region. Flash flooding will be a concern in burn scars, slot canyons, and urban areas. Widespread storms are expected in central/South Florida with some isolated flash flooding possible. Read More >

Current conditions at

Grand Marais/Cook County Airport (KCKC)

Lat: 47.84°NLon: 90.39°WElev: 1784ft.

Fair

39°F

4°C

Humidity 93%
Wind Speed Calm
Barometer 30.40 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 9 Oct 1:35 am CDT
Extended Forecast for

Grand Portage MN

  • Overnight

    Overnight: Mostly clear, with a steady temperature around 41. Southwest wind around 5 mph.

    Low: 41 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 58. Breezy, with a southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 58 °F

    Sunny then
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Showers likely. Increasing clouds, with a low around 50. Breezy, with a southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Showers
    Likely and
    Breezy

  • Friday

    Friday: A 40 percent chance of showers. Partly sunny, with a high near 58. Southwest wind around 10 mph becoming north in the afternoon. Winds could gust as high as 25 mph.

    High: 58 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 47. North wind around 5 mph, with gusts as high as 15 mph.

    Low: 47 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 58. North wind around 5 mph becoming east in the afternoon.

    High: 58 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 49. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 49 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers after 1pm. Partly sunny, with a high near 61. Southeast wind around 10 mph, with gusts as high as 25 mph.

    High: 61 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely. Mostly cloudy, with a low around 52. Southeast wind around 10 mph, with gusts as high as 25 mph.

    Low: 52 °F

    Showers
    Likely

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 41. Southwest wind around 5 mph.
Thursday
Sunny, with a high near 58. Breezy, with a southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Showers likely. Increasing clouds, with a low around 50. Breezy, with a southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 58. Southwest wind around 10 mph becoming north in the afternoon. Winds could gust as high as 25 mph.
Friday Night
Mostly cloudy, with a low around 47. North wind around 5 mph, with gusts as high as 15 mph.
Saturday
Partly sunny, with a high near 58. North wind around 5 mph becoming east in the afternoon.
Saturday Night
Partly cloudy, with a low around 49. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday
A slight chance of showers after 1pm. Partly sunny, with a high near 61. Southeast wind around 10 mph, with gusts as high as 25 mph.
Sunday Night
Showers likely. Mostly cloudy, with a low around 52. Southeast wind around 10 mph, with gusts as high as 25 mph.
Columbus Day
A chance of showers, mainly before 1pm. Partly sunny, with a high near 61. Southwest wind around 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 45. Northwest wind around 5 mph.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 58. Northwest wind around 5 mph.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 44. North wind around 5 mph, with gusts as high as 15 mph.
Wednesday
A chance of showers. Partly sunny, with a high near 55. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grand Portage MN
 47.96°N 89.69°W
Last Update:
1:40 am CDT Oct 9, 2025
Forecast Valid:
1am CDT Oct 9, 2025-6pm CDT Oct 15, 2025
 
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