Water Temperature of Lake Superior Near Duluth, MN

Current Water Temperature

69.6°F

Measurement Time: Friday, August 15, 2025, 10:30 AM CDT

Temperature Locations

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Lake Superior

Station Name: Western Lake Superior
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: 46.814, -91.829

Nearby Water Temperatures

Lake Superior, Duluth, MN (5.7 mi)
Lake Superior, Duluth, MN (7.0 mi)
Knife River, Knife River, MN (9.3 mi)
Duluth Harbor, Duluth, MN (12.7 mi)
Lake Superior, Superior, WI (12.8 mi)
Bois Brule River, Maple, WI (13.1 mi)
Lake Superior, Two Harbors, MN (16.1 mi)
St. Louis River, Scanlon, MN (28.9 mi)
Baptism River, Illgen City, MN (46.7 mi)
Saint Louis River, Hoyt Lakes, MN (47.1 mi)
Chequamegon Bay, Ashland, WI (47.2 mi)
Namekagon River, Cable, WI (50.4 mi)
St. Croix River, Danbury, WI (54.7 mi)
Partrige River, Babbitt, MN (55.8 mi)
Bad River, Ashland, WI (58.3 mi)

Weather Near Duluth, Minnesota

Current Weather

77°F
Overcast
Conditions: Overcast
Humidity: 79%
Feels Like: 80.5°F
Wind: WSW 6.3 mph
Wind Gusts: 7.9 mph
Pressure: 29.93 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 9 mi
UV Index: 5.1

Five Day Weather Forecast

Moderate rain
Fri
H: 87°F
L: 64°F
Moderate rain
Sat
H: 72°F
L: 59°F
Moderate rain
Sun
H: 62°F
L: 58°F
Heavy rain
Mon
H: 65°F
L: 59°F
Patchy rain nearby
Tue
H: 66°F
L: 59°F

Air Quality

AQI: 1 - Good
PM2.5: 17.76 μg/m3
PM10: 18.13 μg/m3
Carbon Monoxide: 355.2 μg/m3
Nitrogen Dioxide: 7.59 μg/m3
Sulphur Dioxide: 3.89 μg/m3
Ozone: 126 μg/m3

Astronomical

Sunrise: 6:06 AM
Sun Transit: 1:11 PM
Sunset: 8:17 PM
Daylight: 14 hrs 12 mins
Moonrise: 10:58 PM
Moon Transit: 6:07 AM
Moonset: 2:02 PM
Moon Phase: Last Quarter
Moon Illumination: 50.4%

Best Times for Fishing or Hunting

Major Periods

5:37 AM - 8:07 AM
5:49 PM - 8:19 PM

Minor Periods

10:28 PM - 11:58 PM
1:32 PM - 3:02 PM

Action Rating: 4 out of 5

Friday, August 15, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 74.3°F
Average Humidity: 81%
Chance of Rain: 81%
Wind: 8.9 mph
UV Index: 1.4

Air Quality

AQI: 1 - Good
PM2.5: 12.96 μg/m3
PM10: 13.22 μg/m3
Carbon Monoxide: 345.65 μg/m3
Nitrogen Dioxide: 6.56 μg/m3
Sulphur Dioxide: 2.53 μg/m3
Ozone: 89.48 μg/m3

Astronomical

Sunrise: 6:06 AM
Sun Transit: 1:11 PM
Sunset: 8:17 PM
Daylight: 14 hrs 12 mins
Moonrise: 10:58 PM
Moon Transit: 6:07 AM
Moonset: 2:02 PM
Moon Phase: Last Quarter
Moon Illumination: 50.4%

Best Times for Fishing or Hunting

Major Periods

5:37 AM - 8:07 AM
5:49 PM - 8:19 PM

Minor Periods

10:28 PM - 11:58 PM
1:32 PM - 3:02 PM

Action Rating: 4 out of 5

Saturday, August 16, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 66.5°F
Average Humidity: 87%
Chance of Rain: 76%
Wind: 14.3 mph
UV Index: 0.8

Air Quality

AQI: 1 - Good
PM2.5: 10.78 μg/m3
PM10: 11.39 μg/m3
Carbon Monoxide: 321.46 μg/m3
Nitrogen Dioxide: 7.84 μg/m3
Sulphur Dioxide: 2.41 μg/m3
Ozone: 79.52 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 1:11 PM
Sunset: 8:16 PM
Daylight: 14 hrs 9 mins
Moonrise: 11:34 PM
Moon Transit: 7:03 AM
Moonset: 3:25 PM
Moon Phase: Last Quarter
Moon Illumination: 39.1%

Best Times for Fishing or Hunting

Major Periods

6:33 AM - 9:03 AM
6:47 PM - 9:17 PM

Minor Periods

12:00 AM - 12:00 AM
2:55 PM - 4:25 PM

Action Rating: 3 out of 5

Sunday, August 17, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 60°F
Average Humidity: 89%
Chance of Rain: 82%
Wind: 21.9 mph
UV Index: 0.6

Air Quality

AQI: 1 - Good
PM2.5: 3.98 μg/m3
PM10: 4.4 μg/m3
Carbon Monoxide: 285.49 μg/m3
Nitrogen Dioxide: 1.96 μg/m3
Sulphur Dioxide: 0.68 μg/m3
Ozone: 65.8 μg/m3

Astronomical

Sunrise: 6:08 AM
Sun Transit: 1:11 PM
Sunset: 8:14 PM
Daylight: 14 hrs 6 mins
Moonrise: 12:34 AM
Moon Transit: 8:03 AM
Moonset: 4:42 PM
Moon Phase: Last Quarter
Moon Illumination: 28.4%

Best Times for Fishing or Hunting

Major Periods

7:33 AM - 10:03 AM
7:48 PM - 10:18 PM

Minor Periods

4:12 PM - 5:42 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Monday, August 18, 2025

Weather Forecast

Conditions: Heavy rain
Average Temperature: 61.6°F
Average Humidity: 97%
Chance of Rain: 89%
Wind: 14.3 mph
UV Index: 0.5

Air Quality

AQI: 1 - Good
PM2.5: 1.89 μg/m3
PM10: 1.95 μg/m3
Carbon Monoxide: 258.41 μg/m3
Nitrogen Dioxide: 1.75 μg/m3
Sulphur Dioxide: 0.59 μg/m3
Ozone: 65.96 μg/m3

Astronomical

Sunrise: 6:09 AM
Sun Transit: 1:11 PM
Sunset: 8:12 PM
Daylight: 14 hrs 3 mins
Moonrise: 12:24 AM
Moon Transit: 9:05 AM
Moonset: 5:47 PM
Moon Phase: Last Quarter
Moon Illumination: 18.9%

Best Times for Fishing or Hunting

Major Periods

8:35 AM - 11:05 AM
8:50 PM - 11:20 PM

Minor Periods

5:17 PM - 6:47 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Tuesday, August 19, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 62.3°F
Average Humidity: 93%
Chance of Rain: 88%
Wind: 13.2 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 3.3 μg/m3
PM10: 3.37 μg/m3
Carbon Monoxide: 262.84 μg/m3
Nitrogen Dioxide: 2.11 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 69 μg/m3

Astronomical

Sunrise: 6:11 AM
Sun Transit: 1:10 PM
Sunset: 8:10 PM
Daylight: 14 hrs mins
Moonrise: 1:27 AM
Moon Transit: 10:06 AM
Moonset: 6:38 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:36 AM - 12:06 AM

Minor Periods

6:08 PM - 7:38 PM
12:57 AM - 2:27 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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