Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Hazardous Weather Conditions

Current conditions at

Grand Marais/Cook County Airport (KCKC)

Lat: 47.84°NLon: 90.39°WElev: 1784ft.

Fair

N/A

Humidity NA
Wind Speed E 9 mph
Barometer 30.20 in
Dewpoint N/A
Visibility 10.00 mi
Last update 17 Aug 7:35 pm CDT
Extended Forecast for

4 Miles NNE Grand Marais MN

  • Tonight

    Tonight: Showers likely, mainly after 5am.  Increasing clouds, with a low around 53. East wind around 10 mph, with gusts as high as 25 mph.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 53 °F

    Mostly Cloudy
    then Showers
    Likely

  • Monday

    Monday: Showers and possibly a thunderstorm, mainly before 3pm, then a chance of showers and thunderstorms after 3pm.  Patchy fog between noon and 1pm. High near 67. East wind around 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 67 °F

    Showers and
    Patchy Fog

  • Monday Night

    Monday Night: A 30 percent chance of showers, mainly before 8pm.  Mostly cloudy, with a low around 56. North wind around 5 mph, with gusts as high as 15 mph.

    Low: 56 °F

    Chance
    Showers then
    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 72. North wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 72 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 55. Calm wind becoming north around 5 mph.

    Low: 55 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 75. Calm wind becoming south around 5 mph in the afternoon.

    High: 75 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 76. Calm wind becoming southwest around 5 mph in the morning.

    High: 76 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, mainly after 1am.  Mostly cloudy, with a low around 61. Southwest wind around 5 mph, with gusts as high as 15 mph.

    Low: 61 °F

    Slight Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Tonight
Showers likely, mainly after 5am. Increasing clouds, with a low around 53. East wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Showers and possibly a thunderstorm, mainly before 3pm, then a chance of showers and thunderstorms after 3pm. Patchy fog between noon and 1pm. High near 67. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
A 30 percent chance of showers, mainly before 8pm. Mostly cloudy, with a low around 56. North wind around 5 mph, with gusts as high as 15 mph.
Tuesday
Partly sunny, with a high near 72. North wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday Night
Mostly clear, with a low around 55. Calm wind becoming north around 5 mph.
Wednesday
Sunny, with a high near 75. Calm wind becoming south around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 58. Calm wind.
Thursday
Mostly sunny, with a high near 76. Calm wind becoming southwest around 5 mph in the morning.
Thursday Night
A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 61. Southwest wind around 5 mph, with gusts as high as 15 mph.
Friday
A slight chance of showers. Mostly sunny, with a high near 76. West wind around 10 mph, with gusts as high as 15 mph.
Friday Night
Partly cloudy, with a low around 55. West wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
A slight chance of showers. Mostly sunny, with a high near 67. West wind around 10 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 51. Northwest wind around 10 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 68. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNE Grand Marais MN
 47.81°N 90.3°W
7:10 pm CDT Aug 17, 2025
7pm CDT Aug 17, 2025-6pm CDT Aug 24, 2025
 
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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