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

50.2°F
Patchy rain nearby
Patchy rain nearby
48.6°F
61.7°F
96%
ENE 4.7 mph
9.9 mph
61.7°F
58.5°F
0 in
0%
0 mi
1005 mbar
0

Five Day Weather Forecast

Partly Cloudy
Tue
H: 69°F
L: 61°F
Sunny
Wed
H: 65°F
L: 54°F
Sunny
Thu
H: 71°F
L: 55°F
Sunny
Fri
H: 63°F
L: 50°F
Sunny
Sat
H: 64°F
L: 49°F

Air Quality

AQI: 1 - Good
PM2.5: 0.4 μg/m3
PM10: 0.4 μg/m3
Carbon Monoxide: 114 μg/m3
Nitrogen Dioxide: 1.1 μg/m3
Sulphur Dioxide: 0.2 μg/m3
Ozone: 77 μg/m3

Astronomical

Sunrise: 5:06 AM
Sun Transit: 1:05 PM
Sunset: 9:03 PM
Daylight: 15 hrs 57 mins
Moonrise: 10:05 PM
Moon Transit: 1:19 AM
Moonset: 5:12 AM
Moon Phase: Full
Moon Illumination: 98.6%

Best Times for Fishing or Hunting

Major Periods

12:49 AM - 3:19 AM
1:11 PM - 3:41 PM

Minor Periods

9:35 PM - 11:05 PM
4:42 AM - 6:12 AM

Action Rating: 4 out of 5

Small Craft Advisory issued June 29 at 2:26PM CDT until June 29 at 10:00PM CDT by NWS Duluth MN

Effective: Mon June 29, 2026, 2:26 PM
Expires: Mon June 29, 2026, 10:00 PM

* WHAT...Northeast winds 10 to 15 kt with gusts up to 25 kt and waves 1 to 3 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.


Small Craft Advisory issued June 29 at 4:24PM CDT until June 29 at 10:00PM CDT by NWS Duluth MN

Effective: Mon June 29, 2026, 4:24 PM
Expires: Tue June 30, 2026, 4:30 AM

* WHAT...For the Dense Fog Advisory, dense fog will reduce visibility to less than 1 NM. For the Small Craft Advisory, northeast winds 10 to 15 kt with gusts up to 30 kt and waves 2 to 3 ft. * WHERE...Portions of Lake Superior. * WHEN...For the Dense Fog Advisory, until 8 AM CDT Tuesday. For the Small Craft Advisory, until 10 PM CDT this evening. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult.

Anyone operating a smaller vessel should avoid navigating in hazardous conditions. 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 June 29 at 4:24PM CDT until June 30 at 8:00AM CDT by NWS Duluth MN

Effective: Mon June 29, 2026, 4:24 PM
Expires: Tue June 30, 2026, 4:30 AM

* WHAT...For the Dense Fog Advisory, dense fog will reduce visibility to less than 1 NM. For the Small Craft Advisory, northeast winds 10 to 15 kt with gusts up to 30 kt and waves 2 to 3 ft. * WHERE...Portions of Lake Superior. * WHEN...For the Dense Fog Advisory, until 8 AM CDT Tuesday. For the Small Craft Advisory, until 10 PM CDT this evening. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult.

Anyone operating a smaller vessel should avoid navigating in hazardous conditions. 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.
Tuesday, June 30, 2026

Weather Forecast

Partly Cloudy
69.1°F
61°F
65°F
81%
0.01 in
36%
0%
10.3 mph
7.4


Air Quality

AQI: 1 - Good
PM2.5: 3.54 μg/m3
PM10: 4.14 μg/m3
Carbon Monoxide: 110.54 μg/m3
Nitrogen Dioxide: 1.29 μg/m3
Sulphur Dioxide: 0.23 μg/m3
Ozone: 82.83 μg/m3

Astronomical

Sunrise: 5:06 AM
Sun Transit: 1:05 PM
Sunset: 9:03 PM
Daylight: 15 hrs 57 mins
Moonrise: 10:05 PM
Moon Transit: 1:19 AM
Moonset: 5:12 AM
Moon Phase: Full
Moon Illumination: 98.6%

Best Times for Fishing or Hunting

Major Periods

12:49 AM - 3:19 AM
1:11 PM - 3:41 PM

Minor Periods

9:35 PM - 11:05 PM
4:42 AM - 6:12 AM

Action Rating: 4 out of 5

Wednesday, July 1, 2026

Weather Forecast

Sunny
64.7°F
54.4°F
59.7°F
83%
0.17 in
71%
0%
13 mph
5.1


Air Quality

AQI: 1 - Good
PM2.5: 3.94 μg/m3
PM10: 5.55 μg/m3
Carbon Monoxide: 107.58 μg/m3
Nitrogen Dioxide: 1.52 μg/m3
Sulphur Dioxide: 0.34 μg/m3
Ozone: 78.67 μg/m3

Astronomical

Sunrise: 5:07 AM
Sun Transit: 1:05 PM
Sunset: 9:03 PM
Daylight: 15 hrs 56 mins
Moonrise: 10:32 PM
Moon Transit: 2:08 AM
Moonset: 6:20 AM
Moon Phase: Full
Moon Illumination: 94.7%

Best Times for Fishing or Hunting

Major Periods

1:38 AM - 4:08 AM
2:00 PM - 4:30 PM

Minor Periods

10:02 PM - 11:32 PM
5:50 AM - 7:20 AM

Action Rating: 3 out of 5

Thursday, July 2, 2026

Weather Forecast

Sunny
71.1°F
54.5°F
62.8°F
78%
0 in
21%
0%
11.4 mph
6.5


Air Quality

AQI: 1 - Good
PM2.5: 5.02 μg/m3
PM10: 5.22 μg/m3
Carbon Monoxide: 116.75 μg/m3
Nitrogen Dioxide: 1.41 μg/m3
Sulphur Dioxide: 0.31 μg/m3
Ozone: 79.46 μg/m3

Astronomical

Sunrise: 5:08 AM
Sun Transit: 1:05 PM
Sunset: 9:03 PM
Daylight: 15 hrs 55 mins
Moonrise: 10:54 PM
Moon Transit: 2:56 AM
Moonset: 7:29 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.5%

Best Times for Fishing or Hunting

Major Periods

2:26 AM - 4:56 AM
2:46 PM - 5:16 PM

Minor Periods

10:24 PM - 11:54 PM
6:59 AM - 8:29 AM

Action Rating: 3 out of 5

Friday, July 3, 2026

Weather Forecast

Sunny
63.1°F
50.2°F
58.8°F
85%
0.25 in
78%
0%
11.4 mph
4.6


Air Quality

AQI: 1 - Good
PM2.5: 3.11 μg/m3
PM10: 3.18 μg/m3
Carbon Monoxide: 127.78 μg/m3
Nitrogen Dioxide: 1.91 μg/m3
Sulphur Dioxide: 0.21 μg/m3
Ozone: 66.63 μg/m3

Astronomical

Sunrise: 5:08 AM
Sun Transit: 1:05 PM
Sunset: 9:03 PM
Daylight: 15 hrs 54 mins
Moonrise: 11:12 PM
Moon Transit: 3:41 AM
Moonset: 8:41 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.3%

Best Times for Fishing or Hunting

Major Periods

3:11 AM - 5:41 AM
3:31 PM - 6:01 PM

Minor Periods

12:00 AM - 12:00 AM
8:11 AM - 9:41 AM

Action Rating: 2 out of 5

Saturday, July 4, 2026

Weather Forecast

Sunny
64.2°F
49.4°F
57.7°F
81%
0 in
11%
0%
10.3 mph
5


Air Quality

AQI: 1 - Good
PM2.5: 3.11 μg/m3
PM10: 3.16 μg/m3
Carbon Monoxide: 177.75 μg/m3
Nitrogen Dioxide: 1.44 μg/m3
Sulphur Dioxide: 0.43 μg/m3
Ozone: 63.75 μg/m3

Astronomical

Sunrise: 5:09 AM
Sun Transit: 1:05 PM
Sunset: 9:02 PM
Daylight: 15 hrs 53 mins
Moonrise: 12:12 AM
Moon Transit: 4:25 AM
Moonset: 9:51 AM
Moon Phase: Waning Gibbous
Moon Illumination: 70.6%

Best Times for Fishing or Hunting

Major Periods

3:55 AM - 6:25 AM
4:14 PM - 6:44 PM

Minor Periods

9:21 AM - 10:51 AM
12:00 AM - 12:00 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