Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Hazardous Weather Conditions

Current conditions at

Grand Marais, The Bay of Grand Marais (KGNA)

Lat: 47.75°NLon: 90.34°WElev: 610ft.

68°F

20°C

Humidity 87%
Wind Speed W 5 mph
Barometer 29.94 in (1013.2 mb)
Dewpoint 64°F (18°C)
Visibility NA
Last update 15 Aug 12:56 pm CDT
Extended Forecast for

4 Miles SW Grand Portage MN

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 72. Southwest wind around 10 mph, with gusts as high as 20 mph.

    High: 72 °F

    Partly Sunny

  • Tonight

    Tonight: A slight chance of showers between 3am and 5am.  Partly cloudy, with a low around 58. Southwest wind 5 to 10 mph becoming north after midnight. Winds could gust as high as 15 mph.  Chance of precipitation is 20%.

    Low: 58 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: A 30 percent chance of showers, mainly between 11am and noon.  Partly sunny, with a high near 66. East wind around 10 mph, with gusts as high as 15 mph.

    High: 66 °F

    Chance
    Showers then
    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 54. Breezy, with a northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 54 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Sunday

    Sunday: Mostly sunny, with a high near 60. Breezy, with an east wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 60 °F

    Mostly Sunny
    and Breezy

  • Sunday Night

    Sunday Night: A 30 percent chance of showers, mainly after 1am.  Mostly cloudy, with a low around 55. Breezy, with an east wind around 15 mph, with gusts as high as 25 mph.

    Low: 55 °F

    Chance
    Showers and
    Breezy

  • Monday

    Monday: A chance of showers.  Partly sunny, with a high near 63. Breezy, with an east wind around 15 mph, with gusts as high as 30 mph.

    High: 63 °F

    Chance
    Showers and
    Breezy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 58. Breezy, with a northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 58 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 65. East wind around 10 mph, with gusts as high as 15 mph.

    High: 65 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 72. Southwest wind around 10 mph, with gusts as high as 20 mph.
Tonight
A slight chance of showers between 3am and 5am. Partly cloudy, with a low around 58. Southwest wind 5 to 10 mph becoming north after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 20%.
Saturday
A 30 percent chance of showers, mainly between 11am and noon. Partly sunny, with a high near 66. East wind around 10 mph, with gusts as high as 15 mph.
Saturday Night
Partly cloudy, with a low around 54. Breezy, with a northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
Mostly sunny, with a high near 60. Breezy, with an east wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 55. Breezy, with an east wind around 15 mph, with gusts as high as 25 mph.
Monday
A chance of showers. Partly sunny, with a high near 63. Breezy, with an east wind around 15 mph, with gusts as high as 30 mph.
Monday Night
Mostly cloudy, with a low around 58. Breezy, with a northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday
Mostly sunny, with a high near 65. East wind around 10 mph, with gusts as high as 15 mph.
Tuesday Night
Partly cloudy, with a low around 58. East wind around 5 mph becoming northwest after midnight.
Wednesday
Sunny, with a high near 68. Northwest wind 5 to 10 mph becoming south in the afternoon.
Wednesday Night
Mostly clear, with a low around 60. West wind around 5 mph.
Thursday
Mostly sunny, with a high near 69. West wind 5 to 10 mph becoming south in the afternoon. Winds could gust as high as 15 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Grand Portage MN
 47.92°N 89.73°W
1:10 pm CDT Aug 15, 2025
1pm CDT Aug 15, 2025-6pm CDT Aug 21, 2025
 
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Additional Resources

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Hourly Weather Forecast

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