Water Temperature of Lake Superior in Grand Marais, MN

Current Water Temperature

40.0°F

Measurement Time: Monday, June 8, 2026, 5:00 AM CDT

Temperature Locations

View Nearby Locations     View All Minnesota Locations     View Locations Near Me

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

59.5°F
Sunny
Sunny
59.5°F
64.8°F
72%
SW 15.4 mph
29.7 mph
64.8°F
50.6°F
0 in
0%
6 mi
1017 mbar
5.7

Five Day Weather Forecast

Sunny
Thu
H: 67°F
L: 55°F
Sunny
Fri
H: 65°F
L: 54°F
Sunny
Sat
H: 75°F
L: 58°F
Sunny
Sun
H: 67°F
L: 55°F
Sunny
Mon
H: 66°F
L: 55°F

Air Quality

AQI: 1 - Good
PM2.5: 11.5 μg/m3
PM10: 11.8 μg/m3
Carbon Monoxide: 149 μg/m3
Nitrogen Dioxide: 0.7 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 108 μg/m3

Astronomical

Sunrise: 5:27 AM
Sun Transit: 1:07 PM
Sunset: 8:48 PM
Daylight: 15 hrs 21 mins
Moonrise: 4:37 PM
Moon Transit: 8:41 PM
Moonset: 12:11 AM
Moon Phase: First Quarter
Moon Illumination: 66.1%

Best Times for Fishing or Hunting

Major Periods

7:44 AM - 10:14 AM
8:11 PM - 10:41 PM

Minor Periods

4:07 PM - 5:37 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Small Craft Advisory issued July 23 at 1:51AM CDT until July 23 at 10:00PM CDT by NWS Duluth MN

Effective: Thu July 23, 2026, 1:51 AM
Expires: Thu July 23, 2026, 2:00 PM

* WHAT...Southwest winds 10 to 20 kt with gusts to 25 kt and waves 3 to 5 ft expected. * WHERE...Grand Portage to Grand Marais MN and Grand Marais to Taconite Harbor MN. * WHEN...From 10 AM this morning to 10 PM CDT this evening. * IMPACTS...Conditions will be hazardous to small craft.

Anyone operating a smaller vessel should avoid navigating in hazardous conditions.


Small Craft Advisory issued July 23 at 2:59PM CDT until July 23 at 11:00PM CDT by NWS Duluth MN

Effective: Thu July 23, 2026, 2:59 PM
Expires: Thu July 23, 2026, 11:00 PM

* WHAT...Southwest winds 10 to 15 kt with gusts up to 30 kt and waves 2 to 4 ft. * WHERE...Grand Portage to Grand Marais MN and Grand Marais to Taconite Harbor MN. * WHEN...Until 11 PM CDT this evening. * IMPACTS...Conditions will be hazardous to small craft.

Anyone operating a smaller vessel should avoid navigating in hazardous conditions.


Small Craft Advisory issued July 23 at 11:36AM CDT until July 23 at 10:00PM CDT by NWS Duluth MN

Effective: Thu July 23, 2026, 11:36 AM
Expires: Thu July 23, 2026, 10:00 PM

* WHAT...Southwest winds 10 to 20 kt with gusts up to 30 kt and waves 2 to 4 ft. * WHERE...Grand Portage to Grand Marais MN and Grand Marais to Taconite Harbor MN. * WHEN...Until 10 PM CDT this evening. * IMPACTS...Conditions will be hazardous to small craft.

Anyone operating a smaller vessel should avoid navigating in hazardous conditions.
Thursday, July 23, 2026

Weather Forecast

Sunny
67.3°F
54.5°F
60.4°F
67%
0 in
5%
0%
15.4 mph
7.4


Air Quality

AQI: 1 - Good
PM2.5: 9.8 μg/m3
PM10: 10.05 μg/m3
Carbon Monoxide: 154.79 μg/m3
Nitrogen Dioxide: 0.99 μg/m3
Sulphur Dioxide: 0.28 μg/m3
Ozone: 84.42 μg/m3

Astronomical

Sunrise: 5:27 AM
Sun Transit: 1:07 PM
Sunset: 8:48 PM
Daylight: 15 hrs 21 mins
Moonrise: 4:37 PM
Moon Transit: 8:41 PM
Moonset: 12:11 AM
Moon Phase: First Quarter
Moon Illumination: 66.1%

Best Times for Fishing or Hunting

Major Periods

7:44 AM - 10:14 AM
8:11 PM - 10:41 PM

Minor Periods

4:07 PM - 5:37 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Friday, July 24, 2026

Weather Forecast

Sunny
65.4°F
53.9°F
61°F
77%
0 in
17%
0%
10.3 mph
6.9


Air Quality

AQI: 1 - Good
PM2.5: 6.47 μg/m3
PM10: 6.6 μg/m3
Carbon Monoxide: 147.42 μg/m3
Nitrogen Dioxide: 1.59 μg/m3
Sulphur Dioxide: 0.41 μg/m3
Ozone: 98.04 μg/m3

Astronomical

Sunrise: 5:28 AM
Sun Transit: 1:07 PM
Sunset: 8:47 PM
Daylight: 15 hrs 18 mins
Moonrise: 5:42 PM
Moon Transit: 9:31 PM
Moonset: 12:41 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.3%

Best Times for Fishing or Hunting

Major Periods

8:33 AM - 11:03 AM
9:01 PM - 11:31 PM

Minor Periods

5:12 PM - 6:42 PM
12:11 AM - 1:41 AM

Action Rating: 3 out of 5

Saturday, July 25, 2026

Weather Forecast

Sunny
74.8°F
57.8°F
65.8°F
78%
0.28 in
74%
0%
14.3 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 5.96 μg/m3
PM10: 6.14 μg/m3
Carbon Monoxide: 125.96 μg/m3
Nitrogen Dioxide: 1.63 μg/m3
Sulphur Dioxide: 0.24 μg/m3
Ozone: 95 μg/m3

Astronomical

Sunrise: 5:30 AM
Sun Transit: 1:07 PM
Sunset: 8:45 PM
Daylight: 15 hrs 16 mins
Moonrise: 6:40 PM
Moon Transit: 10:22 PM
Moonset: 1:18 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.2%

Best Times for Fishing or Hunting

Major Periods

9:24 AM - 11:54 AM
12:00 AM - 12:00 AM

Minor Periods

6:10 PM - 7:40 PM
12:48 AM - 2:18 AM

Action Rating: 2 out of 5

Sunday, July 26, 2026

Weather Forecast

Sunny
67.3°F
55°F
60.6°F
81%
0 in
17%
0%
8.1 mph
5


Air Quality

AQI: 1 - Good
PM2.5: 5.52 μg/m3
PM10: 5.7 μg/m3
Carbon Monoxide: 140.97 μg/m3
Nitrogen Dioxide: 0.85 μg/m3
Sulphur Dioxide: 0.33 μg/m3
Ozone: 89.25 μg/m3

Astronomical

Sunrise: 5:31 AM
Sun Transit: 1:07 PM
Sunset: 8:44 PM
Daylight: 15 hrs 13 mins
Moonrise: 7:28 PM
Moon Transit: 11:14 PM
Moonset: 2:06 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.3%

Best Times for Fishing or Hunting

Major Periods

10:15 AM - 12:45 AM
12:00 AM - 12:00 AM

Minor Periods

6:58 PM - 8:28 PM
1:36 AM - 3:06 AM

Action Rating: 3 out of 5

Monday, July 27, 2026

Weather Forecast

Sunny
65.9°F
54.5°F
60.3°F
77%
0 in
12%
0%
7.4 mph
5


Air Quality

AQI: 1 - Good
PM2.5: 3.68 μg/m3
PM10: 3.8 μg/m3
Carbon Monoxide: 184.88 μg/m3
Nitrogen Dioxide: 1.38 μg/m3
Sulphur Dioxide: 0.41 μg/m3
Ozone: 98 μg/m3

Astronomical

Sunrise: 5:32 AM
Sun Transit: 1:07 PM
Sunset: 8:43 PM
Daylight: 15 hrs 11 mins
Moonrise: 8:06 PM
Moon Transit: 12:00 AM
Moonset: 3:03 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:06 AM - 1:36 PM

Minor Periods

7:36 PM - 9:06 PM
2:33 AM - 4:03 AM

Action Rating: 3 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.

Webcams Near Grand Marais, MN

Sponsored Content