Water Temperature of Lake Superior in Grand Marais, MN

Current Water Temperature

39.0°F

Measurement Time: Wednesday, January 28, 2026, 6:30 AM CST

Temperature Locations

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Lake Superior

Station Name: Grand Marais
Data Source: USGS

Elevation Above Sea Level: 607 feet

Nearest Address:
2nd Street
Grand Marais, MN 55604
Cook County

GPS Coordinates: 47.7517, -90.3283

Nearby Water Temperatures

Grand Marais Harbor, Grand Marais, MN (0.6 mi)
Poplar River, Lutsen, MN (19.4 mi)
Grand Portage River, Grand Portage, MN (33.3 mi)
Lake Superior, Lake Superior, MI (38.1 mi)
Baptism River, Illgen City, MN (49.7 mi)
Washington Creek, Windigo, MI (56.1 mi)
Kawishiwi River, Ely, MN (57.2 mi)
Dunka River, Babbitt, MN (71.4 mi)
Dunka River, Babbitt, MN (71.7 mi)
Partrige River, Babbitt, MN (74.9 mi)
Lake Superior, Two Harbors, MN (80.5 mi)
Chequamegon Bay, Ashland, WI (81.7 mi)
Saint Louis River, Hoyt Lakes, MN (81.9 mi)
Lake Superior, Calumet, MI (86.9 mi)
Presque Isle River, Tula, MI (87.2 mi)

Weather for Grand Marais, Minnesota

Current Weather

1.9°F
Sunny
Sunny
-13.1°F
0.4°F
65%
N 9.4 mph
11 mph
-21.1°F
-9.4°F
0 in
0%
6 mi
1036 mbar
0.7

Five Day Weather Forecast

Sunny
Fri
H: 11°F
L: -7°F
Partly Cloudy
Sat
H: 20°F
L: 5°F
Moderate or heavy snow showers
Sun
H: 24°F
L: 16°F
Partly Cloudy
Mon
H: 22°F
L: 7°F
Partly Cloudy
Tue
H: 17°F
L: -2°F

Air Quality

AQI: 1 - Good
PM2.5: 1.38 μg/m3
PM10: 1.48 μg/m3
Carbon Monoxide: 155.68 μg/m3
Nitrogen Dioxide: 0.98 μg/m3
Sulphur Dioxide: 0.78 μg/m3
Ozone: 75 μg/m3

Astronomical

Sunrise: 7:30 AM
Sun Transit: 12:14 AM
Sunset: 4:59 PM
Daylight: 9 hrs 29 mins
Moonrise: 2:03 PM
Moon Transit: 10:41 PM
Moonset: 6:20 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.4%

Best Times for Fishing or Hunting

Major Periods

9:36 AM - 12:06 AM
12:00 AM - 12:00 AM

Minor Periods

1:33 PM - 3:03 PM
5:50 AM - 7:20 AM

Action Rating: 3 out of 5

Cold Weather Advisory issued January 29 at 9:33PM CST until January 30 at 11:00AM CST by NWS Duluth MN

Effective: Thu January 29, 2026, 9:33 PM
Expires: Fri January 30, 2026, 9:45 AM

* WHAT...Very cold wind chills as low as 35 degrees below zero expected. * 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, Big Sandy Lake, East Lake, Hinckley and, Lena Lake areas and the Bois Forte Band, Lake Vermilion, Nett Lake and, Deer Creek areas. Other locations including Voyageurs National Park. The entire Boundary Waters is also included. * WHEN...Until 11 AM CST Friday. * IMPACTS...The dangerously cold wind chills as low as 35 degrees below zero could cause frostbite on exposed skin in as little as 10 minutes.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.


Cold Weather Advisory issued January 30 at 1:35AM CST until January 30 at 11:00AM CST by NWS Duluth MN

Effective: Fri January 30, 2026, 1:35 AM
Expires: Fri January 30, 2026, 11:00 AM

* WHAT...Very cold wind chills as low as 35 degrees below zero. * WHERE...Northeast and north central Minnesota. * WHEN...Until 11 AM CST this morning. * IMPACTS...The dangerously cold wind chills as low as 35 degrees below zero could cause frostbite on exposed skin in as little as 10 minutes.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.


Friday, January 30, 2026

Weather Forecast

Sunny
10.9°F
-7.1°F
2.8°F
68%
0 in
0%
0%
11.2 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 1.99 μg/m3
PM10: 2.32 μg/m3
Carbon Monoxide: 160.84 μg/m3
Nitrogen Dioxide: 0.94 μg/m3
Sulphur Dioxide: 0.91 μg/m3
Ozone: 73.6 μg/m3

Astronomical

Sunrise: 7:30 AM
Sun Transit: 12:14 AM
Sunset: 4:59 PM
Daylight: 9 hrs 29 mins
Moonrise: 2:03 PM
Moon Transit: 10:41 PM
Moonset: 6:20 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.4%

Best Times for Fishing or Hunting

Major Periods

9:36 AM - 12:06 AM
12:00 AM - 12:00 AM

Minor Periods

1:33 PM - 3:03 PM
5:50 AM - 7:20 AM

Action Rating: 3 out of 5

Saturday, January 31, 2026

Weather Forecast

Partly Cloudy
20.3°F
5°F
13.5°F
76%
0 in
0%
3%
14.1 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 1.79 μg/m3
PM10: 1.9 μg/m3
Carbon Monoxide: 158.44 μg/m3
Nitrogen Dioxide: 1.61 μg/m3
Sulphur Dioxide: 0.99 μg/m3
Ozone: 72.96 μg/m3

Astronomical

Sunrise: 7:29 AM
Sun Transit: 12:14 AM
Sunset: 5:01 PM
Daylight: 9 hrs 32 mins
Moonrise: 3:26 PM
Moon Transit: 11:40 PM
Moonset: 7:05 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.9%

Best Times for Fishing or Hunting

Major Periods

10:38 AM - 1:08 PM
12:00 AM - 12:00 AM

Minor Periods

2:56 PM - 4:26 PM
6:35 AM - 8:05 AM

Action Rating: 2 out of 5

Sunday, February 1, 2026

Weather Forecast

Moderate or heavy snow showers
24.3°F
16.2°F
19.5°F
83%
0.13 in
71%
16%
14.8 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 3.17 μg/m3
PM10: 3.33 μg/m3
Carbon Monoxide: 163.8 μg/m3
Nitrogen Dioxide: 3.33 μg/m3
Sulphur Dioxide: 1.04 μg/m3
Ozone: 74.72 μg/m3

Astronomical

Sunrise: 7:28 AM
Sun Transit: 12:14 AM
Sunset: 5:02 PM
Daylight: 9 hrs 34 mins
Moonrise: 4:51 PM
Moon Transit: 12:00 AM
Moonset: 7:37 AM
Moon Phase: Full
Moon Illumination: 99.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:36 AM - 2:06 PM

Minor Periods

4:21 PM - 5:51 PM
7:07 AM - 8:37 AM

Action Rating: 4 out of 5

Monday, February 2, 2026

Weather Forecast

Partly Cloudy
21.5°F
6.8°F
12.2°F
75%
0 in
0%
0%
11.6 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 1.5 μg/m3
PM10: 1.58 μg/m3
Carbon Monoxide: 155.95 μg/m3
Nitrogen Dioxide: 1.81 μg/m3
Sulphur Dioxide: 0.85 μg/m3
Ozone: 72.28 μg/m3

Astronomical

Sunrise: 7:27 AM
Sun Transit: 12:15 AM
Sunset: 5:04 PM
Daylight: 9 hrs 37 mins
Moonrise: 6:13 PM
Moon Transit: 12:35 AM
Moonset: 8:01 AM
Moon Phase: Full
Moon Illumination: 99.4%

Best Times for Fishing or Hunting

Major Periods

12:05 AM - 2:35 AM
12:28 AM - 2:58 PM

Minor Periods

5:43 PM - 7:13 PM
7:31 AM - 9:01 AM

Action Rating: 4 out of 5

Tuesday, February 3, 2026

Weather Forecast

Partly Cloudy
16.7°F
-2.3°F
7°F
88%
0 in
0%
14%
6.7 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 1.03 μg/m3
PM10: 1.08 μg/m3
Carbon Monoxide: 163.45 μg/m3
Nitrogen Dioxide: 1.23 μg/m3
Sulphur Dioxide: 1.03 μg/m3
Ozone: 70.92 μg/m3

Astronomical

Sunrise: 7:25 AM
Sun Transit: 12:15 AM
Sunset: 5:05 PM
Daylight: 9 hrs 40 mins
Moonrise: 7:31 PM
Moon Transit: 1:25 AM
Moonset: 8:20 AM
Moon Phase: Full
Moon Illumination: 96.3%

Best Times for Fishing or Hunting

Major Periods

12:55 AM - 3:25 AM
1:16 PM - 3:46 PM

Minor Periods

7:01 PM - 8:31 PM
7:50 AM - 9:20 AM

Action Rating: 4 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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