Water Temperature of Grand Marais Harbor in Grand Marais, MN
Current Water Temperature
Measurement Time: Friday, November 28, 2025, 2:18 AM CST
Temperature Locations
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Local Points of Interest
Lake Superior; Grand Marais Campground and Marina; Grand Marais Municipal ArenaStation Name: 9099090 - Grand Marais, MN
Station Type: Fixed
Data Source: National Data Buoy Center
Elevation Above Sea Level: 617 feet
Nearest Address:
391 MN-61
Grand Marais, MN 55604
Cook County
GPS Coordinates: 47.749, -90.341
Nearby Water Temperatures
Lake Superior, Grand Marais, MN (0.6 mi)Poplar River, Lutsen, MN (18.8 mi)
Grand Portage River, Grand Portage, MN (33.9 mi)
Lake Superior, Lake Superior, MI (38.4 mi)
Baptism River, Illgen City, MN (49.1 mi)
Kawishiwi River, Ely, MN (56.7 mi)
Washington Creek, Windigo, MI (56.7 mi)
Dunka River, Babbitt, MN (70.8 mi)
Dunka River, Babbitt, MN (71.1 mi)
Partrige River, Babbitt, MN (74.2 mi)
Lake Superior, Two Harbors, MN (79.9 mi)
Saint Louis River, Hoyt Lakes, MN (81.3 mi)
Chequamegon Bay, Ashland, WI (81.3 mi)
Presque Isle River, Tula, MI (87.2 mi)
Lake Superior, Calumet, MI (87.4 mi)
Weather for Grand Marais, Minnesota
Current Weather

Five Day Weather Forecast

Fri
H: -9°F
L: -23°F

Sat
H: 4°F
L: -18°F

Sun
H: 6°F
L: -8°F

Mon
H: 10°F
L: -9°F

Tue
H: 10°F
L: 5°F
Air Quality
Nitrogen Dioxide: 1.38 μg/m3
Sulphur Dioxide: 0.88 μg/m3
Ozone: 66 μg/m3
Astronomical
Sun Transit: 12:13 AM
Sunset: 4:49 PM
Daylight: 9 hrs 10 mins
Moon Transit: 8:54 AM
Moonset: 10:40 PM
Moon Phase: Waxing Crescent
Moon Illumination: 24.4%
Best Times for Fishing or Hunting
Major Periods
8:24 AM - 10:54 AM8:24 AM - 10:54 AM
Minor Periods
10:10 PM - 11:40 PM9:11 AM - 10:41 AM
Action Rating: 2 out of 5
Extreme Cold Warning issued January 23 at 2:43AM CST until January 24 at 12:00PM CST by NWS Duluth MN
Effective: Fri January 23, 2026, 2:43 AM
Expires: Fri January 23, 2026, 2:45 PM
* WHAT...Dangerously cold wind chills of 45 to near 60 degrees below zero. * WHERE...Crow Wing, Aitkin, Pine, Koochiching, Cass, Itasca, Carlton, St. Louis, Cook and Lake Counties. This includes the Tribal Lands of the Fond du Lac Band, the Grand Portage Reservation, the Mille Lacs Band, East Lake, Big Sandy Lake, Hinckley and, Lena Lake areas and the Bois Forte Band, Nett Lake, Deer Creek and, Lake Vermilion areas. Other locations including Voyageurs National Park. The entire Boundary Waters is also included. * WHEN...Until noon CST Saturday. * IMPACTS...The dangerously cold wind chills as low as 60 degrees below zero could cause frostbite on exposed skin in as little as 5 minutes.
Dress in layers including a hat, face mask, and gloves if you must go outside. Keep pets indoors as much as possible. Make frequent checks on older family, friends, and neighbors. Ensure portable heaters are used correctly. Do not use generators or grills inside.
Weather Forecast
Air Quality
Nitrogen Dioxide: 0.96 μg/m3
Sulphur Dioxide: 0.76 μg/m3
Ozone: 63.76 μg/m3
Astronomical
Sun Transit: 12:13 AM
Sunset: 4:49 PM
Daylight: 9 hrs 10 mins
Moon Transit: 8:54 AM
Moonset: 10:40 PM
Moon Phase: Waxing Crescent
Moon Illumination: 24.4%
Best Times for Fishing or Hunting
Major Periods
8:24 AM - 10:54 AM8:24 AM - 10:54 AM
Minor Periods
10:10 PM - 11:40 PM9:11 AM - 10:41 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.73 μg/m3
Sulphur Dioxide: 0.98 μg/m3
Ozone: 65.68 μg/m3
Astronomical
Sun Transit: 12:13 AM
Sunset: 4:50 PM
Daylight: 9 hrs 13 mins
Moon Transit: 4:48 PM
Moonset: 11:57 PM
Moon Phase: First Quarter
Moon Illumination: 34.7%
Best Times for Fishing or Hunting
Major Periods
3:52 AM - 6:22 AM4:18 PM - 6:48 PM
Minor Periods
12:00 AM - 12:00 AM9:28 AM - 10:58 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 2.99 μg/m3
Sulphur Dioxide: 1.43 μg/m3
Ozone: 63.8 μg/m3
Astronomical
Sun Transit: 12:13 AM
Sunset: 4:52 PM
Daylight: 9 hrs 15 mins
Moon Transit: 5:38 PM
Moonset: 12:57 AM
Moon Phase: First Quarter
Moon Illumination: 45.8%
Best Times for Fishing or Hunting
Major Periods
4:40 AM - 7:10 AM5:08 PM - 7:38 PM
Minor Periods
9:47 AM - 11:17 AM12:00 AM - 12:00 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.12 μg/m3
Sulphur Dioxide: 1.48 μg/m3
Ozone: 63.16 μg/m3
Astronomical
Sun Transit: 12:13 AM
Sunset: 4:53 PM
Daylight: 9 hrs 18 mins
Moon Transit: 6:31 PM
Moonset: 1:18 AM
Moon Phase: First Quarter
Moon Illumination: 57.1%
Best Times for Fishing or Hunting
Major Periods
5:31 AM - 8:01 AM6:01 PM - 8:31 PM
Minor Periods
10:10 AM - 11:40 AM12:48 AM - 2:18 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.39 μg/m3
Sulphur Dioxide: 1.14 μg/m3
Ozone: 68.38 μg/m3
Astronomical
Sun Transit: 12:14 AM
Sunset: 4:55 PM
Daylight: 9 hrs 21 mins
Moon Transit: 7:30 PM
Moonset: 2:43 AM
Moon Phase: First Quarter
Moon Illumination: 68.0%
Best Times for Fishing or Hunting
Major Periods
6:27 AM - 8:57 AM7:00 PM - 9:30 PM
Minor Periods
10:40 AM - 12:10 AM2:13 AM - 3:43 AM
Action Rating: 2 out of 5
