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

Dangerous Surf and Rip Currents for most of the Atlantic Shoreline; Record Heat for the West

Hurricane Erin continues to track northward. Tropical storm force winds, storm surge conditions will increase for the Outer Banks today and portions of coastal Virginia. Life-threatening surf and rip currents along much of the east coast of the U.S. this week. Major to extreme HeatRisk with new record high temperatures are expected for many areas of the western U.S. this week. Read More >

Hazardous Weather Conditions

Current conditions at

Grand Marais, The Bay of Grand Marais (KGNA)

Lat: 47.75°NLon: 90.34°WElev: 610ft.

63°F

17°C

Humidity 93%
Wind Speed Calm
Barometer 30.17 in (1021.3 mb)
Dewpoint 61°F (16°C)
Visibility NA
Last update 20 Aug 6:56 am CDT
Extended Forecast for

3 Miles NNE Grand Marais MN

  • Today

    Today: Patchy dense fog before 8am. Otherwise, mostly sunny, with a high near 69. Calm wind becoming southeast around 5 mph.

    High: 69 °F

    Patchy Dense
    Fog then
    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 56. Southwest wind around 5 mph becoming calm.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Patchy dense fog before 9am. Otherwise, mostly sunny, with a high near 71. Calm wind becoming south around 5 mph in the morning.

    High: 71 °F

    Patchy Dense
    Fog then
    Mostly Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 60. Southwest wind around 5 mph.

    Low: 60 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms before 4pm, then a slight chance of showers. Mostly sunny, with a high near 74. West wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 30%.

    High: 74 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 56. Breezy, with a west wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 56 °F

    Mostly Clear
    then Partly
    Cloudy and
    Breezy

  • Saturday

    Saturday: A chance of showers. Mostly sunny, with a high near 64. Breezy, with a west wind around 15 mph, with gusts as high as 25 mph.

    High: 64 °F

    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: A slight chance of showers after 1am. Mostly cloudy, with a low around 51. Breezy, with a northwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 51 °F

    Breezy.
    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers. Partly sunny, with a high near 60. Breezy, with a northwest wind around 15 mph, with gusts as high as 25 mph.

    High: 60 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

Today
Patchy dense fog before 8am. Otherwise, mostly sunny, with a high near 69. Calm wind becoming southeast around 5 mph.
Tonight
Mostly clear, with a low around 56. Southwest wind around 5 mph becoming calm.
Thursday
Patchy dense fog before 9am. Otherwise, mostly sunny, with a high near 71. Calm wind becoming south around 5 mph in the morning.
Thursday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 60. Southwest wind around 5 mph.
Friday
A chance of showers and thunderstorms before 4pm, then a slight chance of showers. Mostly sunny, with a high near 74. West wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 56. Breezy, with a west wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday
A chance of showers. Mostly sunny, with a high near 64. Breezy, with a west wind around 15 mph, with gusts as high as 25 mph.
Saturday Night
A slight chance of showers after 1am. Mostly cloudy, with a low around 51. Breezy, with a northwest wind around 15 mph, with gusts as high as 25 mph.
Sunday
A chance of showers. Partly sunny, with a high near 60. Breezy, with a northwest wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 48. Breezy, with a northwest wind around 15 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 64. Breezy, with a northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 49. Northwest wind around 10 mph, with gusts as high as 15 mph.
Tuesday
Mostly sunny, with a high near 68. West wind 5 to 10 mph, with gusts as high as 15 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Grand Marais MN
 47.79°N 90.33°W
Last Update:
6:10 am CDT Aug 20, 2025
Forecast Valid:
7am CDT Aug 20, 2025-6pm CDT Aug 26, 2025
 
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Additional Resources

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Chance of Precipitation