Water Temperature of Grand Marais Harbor in Grand Marais, MN

Current Water Temperature

44.2°F

Measurement Time: Monday, June 8, 2026, 2:18 AM 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

42.1°F
Clear
Clear
40.5°F
59°F
100%
NNW 3.1 mph
6.6 mph
59.1°F
49.2°F
0 in
0%
6 mi
1012 mbar
0

Five Day Weather Forecast

Partly Cloudy
Thu
H: 63°F
L: 54°F
Partly Cloudy
Fri
H: 65°F
L: 55°F
Patchy rain nearby
Sat
H: 68°F
L: 53°F
Sunny
Sun
H: 75°F
L: 61°F
Sunny
Mon
H: 76°F
L: 60°F

Air Quality

AQI: 1 - Good
PM2.5: 10 μg/m3
PM10: 13.3 μg/m3
Carbon Monoxide: 115 μg/m3
Nitrogen Dioxide: 0.8 μg/m3
Sulphur Dioxide: 0.2 μg/m3
Ozone: 75 μg/m3

Astronomical

Sunrise: 5:13 AM
Sun Transit: 1:06 PM
Sunset: 9:00 PM
Daylight: 15 hrs 47 mins
Moonrise: 12:37 AM
Moon Transit: 8:14 AM
Moonset: 4:11 PM
Moon Phase: Last Quarter
Moon Illumination: 17.4%

Best Times for Fishing or Hunting

Major Periods

7:44 AM - 10:14 AM
8:09 PM - 10:39 PM

Minor Periods

3:41 PM - 5:11 PM
12:07 AM - 1:37 AM

Action Rating: 2 out of 5

Dense Fog Advisory issued July 8 at 3:12PM EDT until July 9 at 8:00AM EDT by NWS Marquette MI

Effective: Wed July 8, 2026, 2:12 PM
Expires: Thu July 9, 2026, 2:15 AM

* WHAT...Dense fog will reduce visibility to less than one nautical mile. * WHERE...Portions of Central, Eastern and Western Lake Superior. * WHEN...Until 8 AM EDT /7 AM CDT/ Thursday. * IMPACTS...Low visibility will make navigation difficult.

If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass.


Dense Fog Advisory issued July 8 at 10:24PM EDT until July 9 at 8:00AM EDT by NWS Marquette MI

Effective: Wed July 8, 2026, 9:24 PM
Expires: Thu July 9, 2026, 7:00 AM

* WHAT...Dense fog will reduce visibility to less than one nautical mile. * WHERE...Portions of Central, Eastern and Western Lake Superior. * WHEN...Until 8 AM EDT /7 AM CDT/ Thursday. * IMPACTS...Low visibility will make navigation difficult.

If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass.
Thursday, July 9, 2026

Weather Forecast

Partly Cloudy
63°F
54°F
57.8°F
79%
0 in
12%
0%
5.6 mph
6.5


Air Quality

AQI: 1 - Good
PM2.5: 5.8 μg/m3
PM10: 8.02 μg/m3
Carbon Monoxide: 120.21 μg/m3
Nitrogen Dioxide: 1.73 μg/m3
Sulphur Dioxide: 0.25 μg/m3
Ozone: 78.33 μg/m3

Astronomical

Sunrise: 5:13 AM
Sun Transit: 1:06 PM
Sunset: 9:00 PM
Daylight: 15 hrs 47 mins
Moonrise: 12:37 AM
Moon Transit: 8:14 AM
Moonset: 4:11 PM
Moon Phase: Last Quarter
Moon Illumination: 17.4%

Best Times for Fishing or Hunting

Major Periods

7:44 AM - 10:14 AM
8:09 PM - 10:39 PM

Minor Periods

3:41 PM - 5:11 PM
12:07 AM - 1:37 AM

Action Rating: 2 out of 5

Friday, July 10, 2026

Weather Forecast

Partly Cloudy
64.6°F
54.6°F
59.1°F
68%
0.08 in
57%
0%
7.2 mph
7.5


Air Quality

AQI: 1 - Good
PM2.5: 6.12 μg/m3
PM10: 7.21 μg/m3
Carbon Monoxide: 126 μg/m3
Nitrogen Dioxide: 1.43 μg/m3
Sulphur Dioxide: 0.36 μg/m3
Ozone: 87.54 μg/m3

Astronomical

Sunrise: 5:14 AM
Sun Transit: 1:06 PM
Sunset: 8:59 PM
Daylight: 15 hrs 46 mins
Moonrise: 1:04 AM
Moon Transit: 9:11 AM
Moonset: 5:36 PM
Moon Phase: Waning Crescent
Moon Illumination: 9.7%

Best Times for Fishing or Hunting

Major Periods

8:41 AM - 11:11 AM
9:09 PM - 11:39 PM

Minor Periods

5:06 PM - 6:36 PM
12:34 AM - 2:04 AM

Action Rating: 3 out of 5

Saturday, July 11, 2026

Weather Forecast

Patchy rain nearby
68.4°F
53.2°F
60.9°F
90%
0.7 in
89%
0%
8.9 mph
7.5


Air Quality

AQI: 1 - Good
PM2.5: 3.76 μg/m3
PM10: 4.16 μg/m3
Carbon Monoxide: 128.71 μg/m3
Nitrogen Dioxide: 1.63 μg/m3
Sulphur Dioxide: 0.43 μg/m3
Ozone: 99.04 μg/m3

Astronomical

Sunrise: 5:15 AM
Sun Transit: 1:06 PM
Sunset: 8:59 PM
Daylight: 15 hrs 44 mins
Moonrise: 1:42 AM
Moon Transit: 10:14 AM
Moonset: 6:57 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:44 AM - 12:14 AM

Minor Periods

6:27 PM - 7:57 PM
1:12 AM - 2:42 AM

Action Rating: 2 out of 5

Sunday, July 12, 2026

Weather Forecast

Sunny
74.8°F
60.9°F
66.7°F
83%
0.02 in
45%
0%
11.9 mph
7.1


Air Quality

AQI: 1 - Good
PM2.5: 4.91 μg/m3
PM10: 5.13 μg/m3
Carbon Monoxide: 125.94 μg/m3
Nitrogen Dioxide: 1.2 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 86.75 μg/m3

Astronomical

Sunrise: 5:16 AM
Sun Transit: 1:07 PM
Sunset: 8:58 PM
Daylight: 15 hrs 42 mins
Moonrise: 2:36 AM
Moon Transit: 11:20 AM
Moonset: 8:05 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:50 AM - 1:20 PM

Minor Periods

7:35 PM - 9:05 PM
2:06 AM - 3:36 AM

Action Rating: 3 out of 5

Monday, July 13, 2026

Weather Forecast

Sunny
76.1°F
60.1°F
68.8°F
77%
0 in
17%
0%
15.9 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 5.86 μg/m3
PM10: 6.09 μg/m3
Carbon Monoxide: 165 μg/m3
Nitrogen Dioxide: 1.4 μg/m3
Sulphur Dioxide: 0.51 μg/m3
Ozone: 81.13 μg/m3

Astronomical

Sunrise: 5:17 AM
Sun Transit: 1:07 PM
Sunset: 8:57 PM
Daylight: 15 hrs 41 mins
Moonrise: 3:46 AM
Moon Transit: 12:27 AM
Moonset: 8:58 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:57 AM - 2:27 PM

Minor Periods

8:28 PM - 9:58 PM
3:16 AM - 4:46 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.

Webcams Near Grand Marais, MN

Sponsored Content