Water Temperature of Lake Superior in Grand Marais, MN

Current Water Temperature

38.0°F

Measurement Time: Wednesday, March 4, 2026, 6:00 AM CST

Temperature Locations

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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

28.9°F

Conditions: Overcast

Feels Like: 22.2°F

Heat Index: 31°F

Humidity: 89%

Wind: ENE 6.5 mph

Wind Gusts: 11.5 mph

Wind Chill: 24.4°F

Dew Point: 28.4°F

Precipitation: 0 in

Cloud Cover: 0%

Visibility: 0 mi

Air Pressure: 1014 mbar

UV Index: 1

Five Day Weather Forecast

Fri
H: 35°F
L: 27°F

Sat
H: 37°F
L: 23°F

Sun
H: 39°F
L: 23°F

Mon
H: 38°F
L: 20°F

Tue
H: 20°F
L: 16°F

Air Quality

AQI: 1 - Good

PM2.5: 4.98 μg/m3

PM10: 5.28 μg/m3

Carbon Monoxide: 232.68 μg/m3
Nitrogen Dioxide: 3.68 μg/m3
Sulphur Dioxide: 1.28 μg/m3
Ozone: 61 μg/m3

Astronomical

Sunrise: 6:32 AM
Sun Transit: 12:12 AM
Sunset: 5:54 PM
Daylight: 11 hrs 21 mins

Moonrise: 9:58 PM
Moon Transit: 2:12 AM
Moonset: 7:26 AM
Moon Phase: Waning Gibbous
Moon Illumination: 87.6%

Best Times for Fishing or Hunting

Major Periods

1:42 AM - 4:12 AM
2:01 PM - 4:31 PM

Minor Periods

9:28 PM - 10:58 PM
6:56 AM - 8:26 AM

Action Rating: 3 out of 5

Winter Weather Advisory issued March 5 at 8:36PM CST until March 6 at 6:00AM CST by NWS Duluth MN

Effective: Thu March 5, 2026, 8:36 PM
Expires: Fri March 6, 2026, 6:00 AM

* WHAT...Freezing drizzle. Additional ice accumulations around a light glaze. * WHERE...Carlton and South St. Louis, Southern Cook and Southern Lake Counties. This includes the Tribal Lands of the Fond du Lac Band and the Grand Portage Reservation. * WHEN...Until 6 AM CST Friday. * IMPACTS...Slow down and use caution while traveling. Prepare for possible power outages. Call 511 or visit www.511mn.org for Minnesota road information. Use caution while traveling, especially along Highway 61 on the North Shore.

Slow down and use caution while traveling. Call 511 or visit www.511mn.org for Minnesota road information.

Winter Weather Advisory issued March 6 at 1:15AM CST until March 6 at 9:00AM CST by NWS Duluth MN

Effective: Fri March 6, 2026, 1:15 AM
Expires: Fri March 6, 2026, 9:00 AM

* WHAT...Freezing drizzle. Additional ice accumulations around a light glaze. * WHERE...Carlton and South St. Louis, Southern Cook and Southern Lake Counties. This includes the Tribal Lands of the Fond du Lac Band and the Grand Portage Reservation. * WHEN...Until 9 AM CST this morning. * IMPACTS...Roads, and especially bridges and overpasses, will likely be slick and hazardous. Conditions will be worst on untreated surfaces. Very slippery sidewalks, roads and bridges are possible. The hazardous conditions will impact the morning commute.

Slow down and use caution while traveling. Prepare for possible power outages. Call 511 or visit www.511mn.org for Minnesota road information.

Dense Fog Advisory issued March 6 at 1:11AM CST until March 6 at 12:00PM CST by NWS Duluth MN

Effective: Fri March 6, 2026, 1:11 AM
Expires: Fri March 6, 2026, 12:00 PM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Minnesota, Carlton and South St. Louis, Southern Cook and Southern Lake Counties. In Wisconsin, Bayfield and Douglas Counties. This includes the Tribal Lands of the Fond du Lac Band, the Grand Portage Reservation and the Red Cliff Band. Other locations including the Apostle Islands National Lakeshore. * WHEN...Until noon CST today. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...The worst conditions with the poorest visibilities are being reported closer to Lake Superior.

If driving, slow down, use your low-beam headlights and fog lights, and leave plenty of distance ahead of you.

Friday, March 6, 2026

Weather Forecast

Conditions: Moderate or heavy snow showers

High Temperature: 35.4°F

Low Temperature: 27°F

Average Temperature: 32.3°F

Average Humidity: 92%

Precipitation: 0.1 in

Chance of Rain: 85%

Chance of Snow: 9%

Maximum Wind: 8.5 mph

UV Index: 1

Air Quality

AQI: 1 - Good

PM2.5: 3.37 μg/m3

PM10: 3.71 μg/m3

Carbon Monoxide: 211.24 μg/m3
Nitrogen Dioxide: 2.46 μg/m3
Sulphur Dioxide: 1.08 μg/m3
Ozone: 74.52 μg/m3

Astronomical

Sunrise: 6:32 AM
Sun Transit: 12:12 AM
Sunset: 5:54 PM
Daylight: 11 hrs 21 mins

Moonrise: 9:58 PM
Moon Transit: 2:12 AM
Moonset: 7:26 AM
Moon Phase: Waning Gibbous
Moon Illumination: 87.6%

Best Times for Fishing or Hunting

Major Periods

1:42 AM - 4:12 AM
2:01 PM - 4:31 PM

Minor Periods

9:28 PM - 10:58 PM
6:56 AM - 8:26 AM

Action Rating: 3 out of 5

Saturday, March 7, 2026

Weather Forecast

Conditions: Moderate or heavy snow showers

High Temperature: 36.5°F

Low Temperature: 23.4°F

Average Temperature: 30.4°F

Average Humidity: 79%

Precipitation: 0.16 in

Chance of Rain: 78%

Chance of Snow: 17%

Maximum Wind: 17.9 mph

UV Index: 1

Air Quality

AQI: 1 - Good

PM2.5: 1.85 μg/m3

PM10: 1.94 μg/m3

Carbon Monoxide: 193.92 μg/m3
Nitrogen Dioxide: 2.45 μg/m3
Sulphur Dioxide: 0.85 μg/m3
Ozone: 74.2 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 12:00 AM
Sunset: 5:55 PM
Daylight: 11 hrs 25 mins

Moonrise: 11:09 PM
Moon Transit: 2:56 AM
Moonset: 7:43 AM
Moon Phase: Waning Gibbous
Moon Illumination: 79.2%

Best Times for Fishing or Hunting

Major Periods

2:26 AM - 4:56 AM
2:45 PM - 5:15 PM

Minor Periods

12:00 AM - 12:00 AM
7:13 AM - 8:43 AM

Action Rating: 2 out of 5

Sunday, March 8, 2026

Weather Forecast

Conditions: Light freezing rain

High Temperature: 39.4°F

Low Temperature: 22.8°F

Average Temperature: 32°F

Average Humidity: 91%

Precipitation: 0.01 in

Chance of Rain: 87%

Chance of Snow: 6%

Maximum Wind: 18.8 mph

UV Index: 1

Air Quality

AQI: 1 - Good

PM2.5: 2.14 μg/m3

PM10: 2.51 μg/m3

Carbon Monoxide: 155.48 μg/m3
Nitrogen Dioxide: 2.19 μg/m3
Sulphur Dioxide: 1.1 μg/m3
Ozone: 83.4 μg/m3

Astronomical

Sunrise: 6:28 AM
Sun Transit: 12:00 AM
Sunset: 5:57 PM
Daylight: 11 hrs 28 mins

Moonrise: 12:09 AM
Moon Transit: 3:41 AM
Moonset: 8:05 AM
Moon Phase: Waning Gibbous
Moon Illumination: 69.3%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

7:35 AM - 9:05 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Monday, March 9, 2026

Weather Forecast

Conditions: Light freezing rain

High Temperature: 38°F

Low Temperature: 20.1°F

Average Temperature: 31.7°F

Average Humidity: 90%

Precipitation: 0.01 in

Chance of Rain: 80%

Chance of Snow: 13%

Maximum Wind: 13.4 mph

UV Index: 1

Air Quality

AQI: 1 - Good

PM2.5: 2.3 μg/m3

PM10: 2.8 μg/m3

Carbon Monoxide: 148.4 μg/m3
Nitrogen Dioxide: 1.65 μg/m3
Sulphur Dioxide: 0.92 μg/m3
Ozone: 89.08 μg/m3

Astronomical

Sunrise: 6:26 AM
Sun Transit: 12:00 AM
Sunset: 5:58 PM
Daylight: 11 hrs 32 mins

Moonrise: 12:19 AM
Moon Transit: 4:28 AM
Moonset: 8:31 AM
Moon Phase: Waning Gibbous
Moon Illumination: 58.5%

Best Times for Fishing or Hunting

Major Periods

3:58 AM - 6:28 AM
4:19 PM - 6:49 PM

Minor Periods

8:01 AM - 9:31 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, March 10, 2026

Weather Forecast

Conditions: Heavy snow

High Temperature: 20.1°F

Low Temperature: 16.2°F

Average Temperature: 18.9°F

Average Humidity: 89%

Precipitation: 0.14 in

Chance of Rain: 74%

Chance of Snow: 51%

Maximum Wind: 18.6 mph

UV Index: 1

Air Quality

AQI: 1 - Good

PM2.5: 1.1 μg/m3

PM10: 1.29 μg/m3

Carbon Monoxide: 170.76 μg/m3
Nitrogen Dioxide: 1.03 μg/m3
Sulphur Dioxide: 0.99 μg/m3
Ozone: 85.08 μg/m3

Astronomical

Sunrise: 6:24 AM
Sun Transit: 12:00 AM
Sunset: 6:00 PM
Daylight: 11 hrs 35 mins

Moonrise: 1:26 AM
Moon Transit: 5:17 AM
Moonset: 9:05 AM
Moon Phase: Last Quarter
Moon Illumination: 47.2%

Best Times for Fishing or Hunting

Major Periods

4:47 AM - 7:17 AM
5:10 PM - 7:40 PM

Minor Periods

8:35 AM - 10:05 AM
12:56 AM - 2:26 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.

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Water Temperature of Lake Superior in Grand Marais, MN

Current Water Temperature

Temperature Locations

Nearby Water Temperatures

Weather for Grand Marais, Minnesota

Current Weather

Five Day Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Winter Weather Advisory issued March 5 at 8:36PM CST until March 6 at 6:00AM CST by NWS Duluth MN

Winter Weather Advisory issued March 6 at 1:15AM CST until March 6 at 9:00AM CST by NWS Duluth MN

Dense Fog Advisory issued March 6 at 1:11AM CST until March 6 at 12:00PM CST by NWS Duluth MN

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Webcams Near Grand Marais, MN

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