Heat Wave Persists Over the Central U.S.; Significant Flooding Expected in the Northern Mid-Atlantic Tuesday

Dangerous and extreme heat will remain across portions of the Central U.S. this week, persisting across the Mid to Lower Mississippi Valleys, Gulf Coast, Southern Plains and portions of Texas. A heat wave over the Southwest will intensify late this week. Severe thunderstorms and flash flooding will spread from the Great Lakes/Ohio Valley to the Mid-Atlantic and Northeast the next few days. Read More >

Hazardous Weather Conditions

Current conditions at

Grand Marais, The Bay of Grand Marais (KGNA)

Lat: 47.75°NLon: 90.34°WElev: 610ft.

57°F

14°C

Humidity 96%
Wind Speed Calm
Barometer 29.90 in (1012.4 mb)
Dewpoint 56°F (13°C)
Visibility NA
Last update 28 Jul 6:56 am CDT
Extended Forecast for

Grand Marais MN

  • Today

    Today: A 20 percent chance of showers after noon.  Mostly sunny, with a high near 62. Calm wind becoming south around 5 mph.

    High: 62 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 63. Calm wind becoming south around 5 mph.

    High: 63 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 1am.  Mostly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm.  Mostly cloudy, with a high near 64. Calm wind becoming south around 5 mph.  Chance of precipitation is 20%.

    High: 64 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms.  Cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A slight chance of showers, with thunderstorms also possible after 1pm.  Mostly cloudy, with a high near 69. Northwest wind around 5 mph becoming calm.

    High: 69 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 52. Calm wind becoming northwest around 5 mph.

    Low: 52 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 67. North wind around 5 mph becoming calm  in the afternoon.

    High: 67 °F

    Partly Sunny

Detailed Forecast

Today
A 20 percent chance of showers after noon. Mostly sunny, with a high near 62. Calm wind becoming south around 5 mph.
Tonight
Partly cloudy, with a low around 44. Calm wind.
Wednesday
Mostly sunny, with a high near 63. Calm wind becoming south around 5 mph.
Wednesday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 45. Calm wind.
Thursday
A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 64. Calm wind becoming south around 5 mph. Chance of precipitation is 20%.
Thursday Night
A 50 percent chance of showers and thunderstorms. Cloudy, with a low around 48. Calm wind.
Friday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 69. Northwest wind around 5 mph becoming calm.
Friday Night
Mostly cloudy, with a low around 52. Calm wind becoming northwest around 5 mph.
Saturday
Partly sunny, with a high near 67. North wind around 5 mph becoming calm in the afternoon.
Saturday Night
Partly cloudy, with a low around 49. Calm wind.
Sunday
Mostly sunny, with a high near 63. Calm wind becoming east around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 48. East wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 66. Southeast wind around 5 mph.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Grand Marais MN
 47.74°N 90.33°W
6:41 am CDT Jul 28, 2026
7am CDT Jul 28, 2026-6pm CDT Aug 3, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database