Water Temperature of Lake Superior Near Duluth, MN

Current Water Temperature

59.5°F

Measurement Time: Tuesday, September 16, 2025, 10:30 PM CDT

Temperature Locations

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Local Points of Interest

McQuade Harbor; Lakewood, MN

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Lake Superior

Station Name: McQuade Harbor Nearshore, MN
Station Type: Buoy
Data Source: National Data Buoy Center

Elevation Above Sea Level: 587 feet / 179 meters

Nearest Address:
Offshore
Duluth, MN 55804
St. Louis County

GPS Coordinates: 46.86, -91.93

Nearby Water Temperatures

Lake Superior, Duluth, MN (1.4 mi)
Lake Superior, Duluth, MN (5.7 mi)
Knife River, Knife River, MN (8.8 mi)
Duluth Harbor, Duluth, MN (9.6 mi)
Lake Superior, Superior, WI (11.5 mi)
Lake Superior, Two Harbors, MN (16.6 mi)
Bois Brule River, Maple, WI (18.8 mi)
St. Louis River, Scanlon, MN (25.5 mi)
Saint Louis River, Hoyt Lakes, MN (43.2 mi)
Baptism River, Illgen City, MN (47.6 mi)
Partrige River, Babbitt, MN (52.5 mi)
Chequamegon Bay, Ashland, WI (52.7 mi)
Namekagon River, Cable, WI (55.5 mi)
Dunka River, Babbitt, MN (55.8 mi)
St. Croix River, Danbury, WI (56.2 mi)

Weather Near Duluth, Minnesota

Current Weather

62.8°F
Mist
Conditions: Mist
Humidity: 100%
Feels Like: 62.8°F
Wind: WNW 4.3 mph
Wind Gusts: 8.9 mph
Pressure: 30.04 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 6 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Wed
H: 85°F
L: 68°F
Patchy rain nearby
Thu
H: 58°F
L: 53°F
Moderate rain
Fri
H: 54°F
L: 50°F
Moderate rain
Sat
H: 60°F
L: 50°F
Patchy rain nearby
Sun
H: 71°F
L: 58°F

Air Quality

PM2.5: 24.05 μg/m3
PM10: 25.53 μg/m3
Carbon Monoxide: 418.1 μg/m3
Nitrogen Dioxide: 22.76 μg/m3
Sulphur Dioxide: 4.44 μg/m3
Ozone: 47 μg/m3

Astronomical

Sunrise: 6:49 AM
Sun Transit: 1:02 PM
Sunset: 7:15 PM
Daylight: 12 hrs 26 mins
Moonrise: 1:46 AM
Moon Transit: 9:54 AM
Moonset: 5:47 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:24 AM - 11:54 AM

Minor Periods

5:17 PM - 6:47 PM
1:16 AM - 2:46 AM

Action Rating: 3 out of 5

Wednesday, September 17, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 75.3°F
Average Humidity: 66%
Chance of Rain: 0%
Wind: 9.2 mph
UV Index: 1.2

Air Quality

AQI: 2 - Moderate
PM2.5: 22.4 μg/m3
PM10: 23.8 μg/m3
Carbon Monoxide: 487.51 μg/m3
Nitrogen Dioxide: 15.53 μg/m3
Sulphur Dioxide: 4.34 μg/m3
Ozone: 91.68 μg/m3

Astronomical

Sunrise: 6:49 AM
Sun Transit: 1:02 PM
Sunset: 7:15 PM
Daylight: 12 hrs 26 mins
Moonrise: 1:46 AM
Moon Transit: 9:54 AM
Moonset: 5:47 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:24 AM - 11:54 AM

Minor Periods

5:17 PM - 6:47 PM
1:16 AM - 2:46 AM

Action Rating: 3 out of 5

Thursday, September 18, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 57.3°F
Average Humidity: 90%
Chance of Rain: 88%
Wind: 18.8 mph
UV Index: 1.1

Air Quality

AQI: 1 - Good
PM2.5: 8.91 μg/m3
PM10: 9.41 μg/m3
Carbon Monoxide: 330.63 μg/m3
Nitrogen Dioxide: 6.25 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 70.44 μg/m3

Astronomical

Sunrise: 6:50 AM
Sun Transit: 1:01 PM
Sunset: 7:13 PM
Daylight: 12 hrs 23 mins
Moonrise: 3:03 AM
Moon Transit: 10:45 AM
Moonset: 6:10 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:15 AM - 12:45 AM

Minor Periods

5:40 PM - 7:10 PM
2:33 AM - 4:03 AM

Action Rating: 3 out of 5

Friday, September 19, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 52°F
Average Humidity: 88%
Chance of Rain: 77%
Wind: 17.9 mph
UV Index: 0.7

Air Quality

AQI: 1 - Good
PM2.5: 1.07 μg/m3
PM10: 1.12 μg/m3
Carbon Monoxide: 268.32 μg/m3
Nitrogen Dioxide: 1.64 μg/m3
Sulphur Dioxide: 0.54 μg/m3
Ozone: 54.96 μg/m3

Astronomical

Sunrise: 6:51 AM
Sun Transit: 1:01 PM
Sunset: 7:11 PM
Daylight: 12 hrs 19 mins
Moonrise: 4:19 AM
Moon Transit: 11:31 AM
Moonset: 6:28 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:01 AM - 1:31 PM

Minor Periods

5:58 PM - 7:28 PM
3:49 AM - 5:19 AM

Action Rating: 3 out of 5

Saturday, September 20, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 56.8°F
Average Humidity: 94%
Chance of Rain: 88%
Wind: 14.8 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 1.69 μg/m3
PM10: 1.82 μg/m3
Carbon Monoxide: 280.77 μg/m3
Nitrogen Dioxide: 2.05 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 53.69 μg/m3

Astronomical

Sunrise: 6:53 AM
Sun Transit: 1:00 PM
Sunset: 7:09 PM
Daylight: 12 hrs 16 mins
Moonrise: 5:30 AM
Moon Transit: 12:14 AM
Moonset: 6:44 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:44 AM - 2:14 PM

Minor Periods

6:14 PM - 7:44 PM
5:00 AM - 6:30 AM

Action Rating: 3 out of 5

Sunday, September 21, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 61.8°F
Average Humidity: 95%
Chance of Rain: 89%
Wind: 6.7 mph
UV Index: 0

Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:54 AM
Sun Transit: 1:00 PM
Sunset: 7:07 PM
Daylight: 12 hrs 13 mins
Moonrise: 6:40 AM
Moon Transit: 12:55 AM
Moonset: 6:58 PM
Moon Phase: New
Moon Illumination: 0.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:25 AM - 2:55 PM

Minor Periods

6:28 PM - 7:58 PM
6:10 AM - 7:40 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.

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