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

48.9°F
Partly Cloudy
Partly Cloudy
45.7°F
67.1°F
93%
W 7.4 mph
15.5 mph
67.1°F
58.9°F
0 in
0%
6 mi
1017 mbar
1.4

Five Day Weather Forecast

Sunny
Tue
H: 82°F
L: 65°F
Sunny
Wed
H: 76°F
L: 60°F
Partly Cloudy
Thu
H: 66°F
L: 56°F
Light rain shower
Fri
H: 63°F
L: 53°F
Sunny
Sat
H: 75°F
L: 53°F

Air Quality

AQI: 1 - Good
PM2.5: 2 μg/m3
PM10: 2.1 μg/m3
Carbon Monoxide: 116 μg/m3
Nitrogen Dioxide: 1 μg/m3
Sulphur Dioxide: 0.2 μg/m3
Ozone: 87 μg/m3

Astronomical

Sunrise: 5:17 AM
Sun Transit: 1:07 PM
Sunset: 8:56 PM
Daylight: 15 hrs 39 mins
Moonrise: 5:09 AM
Moon Transit: 1:31 PM
Moonset: 9:35 PM
Moon Phase: New
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:27 AM - 2:57 AM
1:01 PM - 3:31 PM

Minor Periods

9:05 PM - 10:35 PM
4:39 AM - 6:09 AM

Action Rating: 4 out of 5

Small Craft Advisory issued July 13 at 9:17PM CDT until July 14 at 6:00AM CDT by NWS Duluth MN

Effective: Mon July 13, 2026, 9:17 PM
Expires: Tue July 14, 2026, 6:00 AM

* WHAT...Southwest winds 10 to 15 kt with gusts up to 25 kt and waves 2 to 5 ft. * WHERE...Grand Portage to Grand Marais MN. * WHEN...Until 6 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft.

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


Small Craft Advisory issued July 14 at 2:32AM CDT until July 14 at 6:00AM CDT by NWS Duluth MN

Effective: Tue July 14, 2026, 2:32 AM
Expires: Tue July 14, 2026, 6:00 AM

* WHAT...Southwest winds 10 to 15 knots with gusts to 25 knots. Waves 2 to 4 ft. * WHERE...Grand Portage to Grand Marais MN. * WHEN...Until 6 AM CDT early this morning. * IMPACTS...Conditions will be hazardous to small craft.

Anyone operating a smaller vessel should avoid navigating in hazardous conditions.
Tuesday, July 14, 2026

Weather Forecast

Sunny
81.6°F
64.8°F
70.2°F
62%
0 in
6%
0%
13.2 mph
8.3


Air Quality

AQI: 1 - Good
PM2.5: 4.71 μg/m3
PM10: 4.88 μg/m3
Carbon Monoxide: 115.21 μg/m3
Nitrogen Dioxide: 1.06 μg/m3
Sulphur Dioxide: 0.29 μg/m3
Ozone: 93.25 μg/m3

Astronomical

Sunrise: 5:17 AM
Sun Transit: 1:07 PM
Sunset: 8:56 PM
Daylight: 15 hrs 39 mins
Moonrise: 5:09 AM
Moon Transit: 1:31 PM
Moonset: 9:35 PM
Moon Phase: New
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:27 AM - 2:57 AM
1:01 PM - 3:31 PM

Minor Periods

9:05 PM - 10:35 PM
4:39 AM - 6:09 AM

Action Rating: 4 out of 5

Wednesday, July 15, 2026

Weather Forecast

Sunny
75.5°F
60.3°F
66.9°F
50%
0 in
3%
0%
10.5 mph
8.1


Air Quality

AQI: 1 - Good
PM2.5: 6.21 μg/m3
PM10: 6.54 μg/m3
Carbon Monoxide: 103.92 μg/m3
Nitrogen Dioxide: 1.69 μg/m3
Sulphur Dioxide: 0.35 μg/m3
Ozone: 78.71 μg/m3

Astronomical

Sunrise: 5:18 AM
Sun Transit: 1:07 PM
Sunset: 8:56 PM
Daylight: 15 hrs 37 mins
Moonrise: 6:38 AM
Moon Transit: 2:29 PM
Moonset: 10:03 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

1:28 AM - 3:58 AM
1:59 PM - 4:29 PM

Minor Periods

9:33 PM - 11:03 PM
6:08 AM - 7:38 AM

Action Rating: 3 out of 5

Thursday, July 16, 2026

Weather Forecast

Partly Cloudy
65.6°F
56°F
60.1°F
75%
0.17 in
66%
0%
11 mph
1.7


Air Quality

AQI: 1 - Good
PM2.5: 7.09 μg/m3
PM10: 7.68 μg/m3
Carbon Monoxide: 137.96 μg/m3
Nitrogen Dioxide: 1.95 μg/m3
Sulphur Dioxide: 0.34 μg/m3
Ozone: 71.71 μg/m3

Astronomical

Sunrise: 5:20 AM
Sun Transit: 1:07 PM
Sunset: 8:55 PM
Daylight: 15 hrs 35 mins
Moonrise: 8:03 AM
Moon Transit: 3:22 PM
Moonset: 10:24 PM
Moon Phase: New
Moon Illumination: 2.4%

Best Times for Fishing or Hunting

Major Periods

2:24 AM - 4:54 AM
2:52 PM - 5:22 PM

Minor Periods

9:54 PM - 11:24 PM
7:33 AM - 9:03 AM

Action Rating: 4 out of 5

Friday, July 17, 2026

Weather Forecast

Light rain shower
63°F
52.8°F
55.3°F
93%
0.51 in
91%
0%
18.8 mph
2.1


Air Quality

AQI: 1 - Good
PM2.5: 4.9 μg/m3
PM10: 5.15 μg/m3
Carbon Monoxide: 121.58 μg/m3
Nitrogen Dioxide: 0.8 μg/m3
Sulphur Dioxide: 0.25 μg/m3
Ozone: 79.75 μg/m3

Astronomical

Sunrise: 5:21 AM
Sun Transit: 1:07 PM
Sunset: 8:54 PM
Daylight: 15 hrs 33 mins
Moonrise: 9:24 AM
Moon Transit: 4:11 PM
Moonset: 10:42 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

3:14 AM - 5:44 AM
3:41 PM - 6:11 PM

Minor Periods

10:12 PM - 11:42 PM
8:54 AM - 10:24 AM

Action Rating: 3 out of 5

Saturday, July 18, 2026

Weather Forecast

Sunny
75.3°F
53.4°F
60.6°F
84%
0.02 in
41%
0%
13.4 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 4.09 μg/m3
PM10: 4.28 μg/m3
Carbon Monoxide: 137.38 μg/m3
Nitrogen Dioxide: 0.71 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 74.13 μg/m3

Astronomical

Sunrise: 5:22 AM
Sun Transit: 1:07 PM
Sunset: 8:53 PM
Daylight: 15 hrs 31 mins
Moonrise: 10:42 AM
Moon Transit: 4:56 PM
Moonset: 10:57 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

4:01 AM - 6:31 AM
4:26 PM - 6:56 PM

Minor Periods

10:27 PM - 11:57 PM
10:12 AM - 11:42 AM

Action Rating: 2 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