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

Heavy to Excessive Rainfall and Flooding Threats in the Central and Eastern U.S.; Heat and Fire Weather Concerns in the West

Thunderstorms producing excessive rainfall and potential flooding concerns will continue through tonight from the Southern Plains to the East Coast. Areas of greatest concern for flooding are over central Texas and the Mid-Atlantic. Heat will continue to build across the West through Tuesday. Heat Advisories and Extreme Heat Warnings are in effect. Fire Weather concerns continue through Monday. Read More >

Hazardous Weather Conditions

Current conditions at

Grand Marais, The Bay of Grand Marais (KGNA)

Lat: 47.75°NLon: 90.34°WElev: 610ft.

65°F

18°C

Humidity 70%
Wind Speed W 8 mph
Barometer 29.79 in (1008.4 mb)
Dewpoint 55°F (13°C)
Visibility NA
Last update 13 Jul 4:56 pm CDT
Extended Forecast for

Grand Marais MN

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 9pm. Areas of smoke before 7pm, then areas of smoke after 11pm. Partly cloudy, with a low around 60. Southwest wind 5 to 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph.

    Low: 60 °F

    Slight Chance
    T-storms then
    Areas Smoke

  • Monday

    Monday: Areas of smoke. Increasing clouds, with a high near 79. Northwest wind around 5 mph becoming southwest in the afternoon.

    High: 79 °F

    Areas Smoke

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms, mainly after 7pm. Areas of smoke before midnight, then areas of smoke after 5am. Mostly cloudy, with a low around 58. Calm wind becoming east around 5 mph.

    Low: 58 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. Areas of smoke before 7am. High near 73. Calm wind becoming southwest around 5 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 73 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 10pm, then showers likely between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 53. Northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 53 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 64. Northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 64 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers. Mostly cloudy, with a low around 52. Northeast wind around 5 mph.

    Low: 52 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers before 1pm. Mostly sunny, with a high near 69. North wind around 5 mph becoming south in the afternoon.

    High: 69 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53. Southwest wind around 5 mph becoming calm in the evening.

    Low: 53 °F

    Mostly Clear

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 9pm. Areas of smoke before 7pm, then areas of smoke after 11pm. Partly cloudy, with a low around 60. Southwest wind 5 to 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph.
Monday
Areas of smoke. Increasing clouds, with a high near 79. Northwest wind around 5 mph becoming southwest in the afternoon.
Monday Night
A 50 percent chance of showers and thunderstorms, mainly after 7pm. Areas of smoke before midnight, then areas of smoke after 5am. Mostly cloudy, with a low around 58. Calm wind becoming east around 5 mph.
Tuesday
Showers and possibly a thunderstorm. Areas of smoke before 7am. High near 73. Calm wind becoming southwest around 5 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday Night
Showers likely and possibly a thunderstorm before 10pm, then showers likely between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 53. Northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 64. Northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 52. Northeast wind around 5 mph.
Thursday
A chance of showers before 1pm. Mostly sunny, with a high near 69. North wind around 5 mph becoming south in the afternoon.
Thursday Night
Mostly clear, with a low around 53. Southwest wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 72. Calm wind becoming southwest around 5 mph in the afternoon.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 55. Southwest wind around 5 mph becoming calm.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 72. Calm wind becoming southwest around 5 mph in the afternoon.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 55. West wind around 5 mph becoming calm.
Sunday
Mostly sunny, with a high near 73. North wind around 5 mph becoming south in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Marais MN
 47.76°N 90.33°W
Last Update:
4:26 pm CDT Jul 13, 2025
Forecast Valid:
5pm CDT Jul 13, 2025-6pm CDT Jul 20, 2025
 
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