Water Temperature of Lake Superior Near Duluth, MN

Current Water Temperature

60.4°F

Measurement Time: Wednesday, September 17, 2025, 10:30 PM 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

64.6°F
Partly cloudy
Conditions: Partly cloudy
Humidity: 94%
Feels Like: 64.6°F
Wind: ENE 13.6 mph
Wind Gusts: 24.5 mph
Pressure: 30.04 in
Precipitation: 0 in
Cloud Cover: 75%
Visibility: 9 mi
UV Index: 0

Five Day Weather Forecast

Overcast
Thu
H: 59°F
L: 55°F
Heavy rain
Fri
H: 55°F
L: 53°F
Heavy rain
Sat
H: 60°F
L: 51°F
Patchy rain nearby
Sun
H: 72°F
L: 56°F
Moderate rain
Mon
H: 69°F
L: 58°F

Air Quality

PM2.5: 3.33 μg/m3
PM10: 3.52 μg/m3
Carbon Monoxide: 281.2 μg/m3
Nitrogen Dioxide: 1.48 μg/m3
Sulphur Dioxide: 0.56 μg/m3
Ozone: 70 μg/m3

Astronomical

Sunrise: 6:50 AM
Sun Transit: 1:01 PM
Sunset: 7:12 PM
Daylight: 12 hrs 22 mins
Moonrise: 3:03 AM
Moon Transit: 10:44 AM
Moonset: 6:09 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:14 AM - 12:44 AM

Minor Periods

5:39 PM - 7:09 PM
2:33 AM - 4:03 AM

Action Rating: 3 out of 5

Thursday, September 18, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 57.3°F
Average Humidity: 89%
Chance of Rain: 0%
Wind: 18.6 mph
UV Index: 0.6

Air Quality

AQI: 1 - Good
PM2.5: 5.88 μg/m3
PM10: 6.14 μg/m3
Carbon Monoxide: 321.31 μg/m3
Nitrogen Dioxide: 4.08 μg/m3
Sulphur Dioxide: 1.14 μg/m3
Ozone: 68.68 μg/m3

Astronomical

Sunrise: 6:50 AM
Sun Transit: 1:01 PM
Sunset: 7:12 PM
Daylight: 12 hrs 22 mins
Moonrise: 3:03 AM
Moon Transit: 10:44 AM
Moonset: 6:09 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:14 AM - 12:44 AM

Minor Periods

5:39 PM - 7:09 PM
2:33 AM - 4:03 AM

Action Rating: 3 out of 5

Friday, September 19, 2025

Weather Forecast

Conditions: Heavy rain
Average Temperature: 54.2°F
Average Humidity: 96%
Chance of Rain: 88%
Wind: 19.2 mph
UV Index: 0.3

Air Quality

AQI: 1 - Good
PM2.5: 2 μg/m3
PM10: 2.14 μg/m3
Carbon Monoxide: 275.58 μg/m3
Nitrogen Dioxide: 1.82 μg/m3
Sulphur Dioxide: 0.55 μg/m3
Ozone: 56 μg/m3

Astronomical

Sunrise: 6:51 AM
Sun Transit: 1:00 PM
Sunset: 7:10 PM
Daylight: 12 hrs 19 mins
Moonrise: 4:18 AM
Moon Transit: 11:30 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
11:00 AM - 1:30 PM

Minor Periods

5:58 PM - 7:28 PM
3:48 AM - 5:18 AM

Action Rating: 3 out of 5

Saturday, September 20, 2025

Weather Forecast

Conditions: Heavy rain
Average Temperature: 55.4°F
Average Humidity: 97%
Chance of Rain: 88%
Wind: 12.8 mph
UV Index: 0.4

Air Quality

AQI: 1 - Good
PM2.5: 5.09 μg/m3
PM10: 5.33 μg/m3
Carbon Monoxide: 278.02 μg/m3
Nitrogen Dioxide: 3.63 μg/m3
Sulphur Dioxide: 0.63 μg/m3
Ozone: 66.44 μg/m3

Astronomical

Sunrise: 6:52 AM
Sun Transit: 1:00 PM
Sunset: 7:08 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: 61.7°F
Average Humidity: 88%
Chance of Rain: 87%
Wind: 5.8 mph
UV Index: 0.7

Air Quality

AQI: 1 - Good
PM2.5: 9.14 μg/m3
PM10: 9.29 μg/m3
Carbon Monoxide: 349.65 μg/m3
Nitrogen Dioxide: 8.2 μg/m3
Sulphur Dioxide: 1.34 μg/m3
Ozone: 71.23 μg/m3

Astronomical

Sunrise: 6:53 AM
Sun Transit: 1:00 PM
Sunset: 7:06 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

Monday, September 22, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 61.8°F
Average Humidity: 97%
Chance of Rain: 86%
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: 6:55 AM
Sun Transit: 1:00 PM
Sunset: 7:04 PM
Daylight: 12 hrs 9 mins
Moonrise: 7:47 AM
Moon Transit: 1:35 PM
Moonset: 7:12 PM
Moon Phase: New
Moon Illumination: 2.9%

Best Times for Fishing or Hunting

Major Periods

12:30 AM - 3:00 AM
1:05 PM - 3:35 PM

Minor Periods

6:42 PM - 8:12 PM
7:17 AM - 8:47 AM

Action Rating: 5 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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