Water Temperature of Grand Marais Harbor in Grand Marais, MN

Current Water Temperature

47.8°F

Measurement Time: Thursday, July 23, 2026, 2:18 PM CDT

Temperature Locations

View Nearby Locations     View All Minnesota Locations     View Locations Near Me

Local Points of Interest

Lake Superior; Grand Marais Campground and Marina; Grand Marais Municipal Arena

Grand Marais Harbor

Station 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

57.9°F
Sunny
Sunny
56.2°F
65.1°F
72%
WSW 8.5 mph
17.9 mph
65.1°F
51°F
0 in
0%
6 mi
1017 mbar
1.3

Five Day Weather Forecast

Sunny
Thu
H: 67°F
L: 55°F
Sunny
Fri
H: 65°F
L: 56°F
Sunny
Sat
H: 73°F
L: 58°F
Sunny
Sun
H: 68°F
L: 54°F
Sunny
Mon
H: 66°F
L: 54°F

Air Quality

AQI: 1 - Good
PM2.5: 11.9 μg/m3
PM10: 12.2 μg/m3
Carbon Monoxide: 155 μg/m3
Nitrogen Dioxide: 1 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 111 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
60.1°F
69%
0 in
6%
0%
15.4 mph
7


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
65.3°F
56°F
62°F
73%
0.05 in
57%
0%
10.1 mph
7.4


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
73.1°F
58.3°F
65.8°F
80%
0.25 in
74%
0%
13.4 mph
6.9


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
67.6°F
53.8°F
61.5°F
78%
0 in
10%
0%
8.5 mph
7


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
66.3°F
53.8°F
60.3°F
84%
0.04 in
57%
0%
11 mph
6.9


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