Water Temperature of Lake Superior Near Duluth, MN
Current Water Temperature
65.8°F
Measurement Time: Wednesday, July 29, 2026, 9:40 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
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 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
74.5°F

Clear
64.2°F
77.7°F
72%
SSW 5.4 mph
11.3 mph
74.5°F
65.1°F
0 in
0%
6 mi
1012 mbar
0
Five Day Weather Forecast

Wed
H: 90°F
L: 58°F

Thu
H: 90°F
L: 65°F

Fri
H: 83°F
L: 62°F

Sat
H: 72°F
L: 56°F

Sun
H: 72°F
L: 53°F
Air Quality
AQI:
1 - Good
PM2.5:
16.5 μg/m3
PM10:
17 μg/m3
Carbon Monoxide: 211 μg/m3
Nitrogen Dioxide: 7.1 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 76 μg/m3
Nitrogen Dioxide: 7.1 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 76 μg/m3
Astronomical
Sunrise: 5:44 AM
Sun Transit: 1:13 PM
Sunset: 8:43 PM
Daylight: 15 hrs mins
Sun Transit: 1:13 PM
Sunset: 8:43 PM
Daylight: 15 hrs mins
Moonrise: 9:02 PM
Moon Transit: 1:00 AM
Moonset: 5:29 AM
Moon Phase: Full
Moon Illumination: 99.7%
Moon Transit: 1:00 AM
Moonset: 5:29 AM
Moon Phase: Full
Moon Illumination: 99.7%
Best Times for Fishing or Hunting
Major Periods
12:30 AM - 3:00 AM12:38 AM - 3:08 PM
Minor Periods
8:32 PM - 10:02 PM4:59 AM - 6:29 AM
Action Rating: 4 out of 5
Wednesday, July 29, 2026
Weather Forecast
Sunny
90°F
57.6°F
73.5°F
71%
0 in
6%
0%
5.4 mph
6.9
Air Quality
AQI:
2 - Moderate
PM2.5:
21.32 μg/m3
PM10:
21.87 μg/m3
Carbon Monoxide: 178.13 μg/m3
Nitrogen Dioxide: 7.08 μg/m3
Sulphur Dioxide: 0.53 μg/m3
Ozone: 73.63 μg/m3
Nitrogen Dioxide: 7.08 μg/m3
Sulphur Dioxide: 0.53 μg/m3
Ozone: 73.63 μg/m3
Astronomical
Sunrise: 5:44 AM
Sun Transit: 1:13 PM
Sunset: 8:43 PM
Daylight: 15 hrs mins
Sun Transit: 1:13 PM
Sunset: 8:43 PM
Daylight: 15 hrs mins
Moonrise: 9:02 PM
Moon Transit: 1:00 AM
Moonset: 5:29 AM
Moon Phase: Full
Moon Illumination: 99.7%
Moon Transit: 1:00 AM
Moonset: 5:29 AM
Moon Phase: Full
Moon Illumination: 99.7%
Best Times for Fishing or Hunting
Major Periods
12:30 AM - 3:00 AM12:38 AM - 3:08 PM
Minor Periods
8:32 PM - 10:02 PM4:59 AM - 6:29 AM
Action Rating: 4 out of 5
Thursday, July 30, 2026
Weather Forecast
Sunny
90.3°F
65.2°F
78.5°F
63%
0 in
6%
0%
12.5 mph
5.3
Air Quality
AQI:
2 - Moderate
PM2.5:
18.01 μg/m3
PM10:
18.7 μg/m3
Carbon Monoxide: 169.33 μg/m3
Nitrogen Dioxide: 6.38 μg/m3
Sulphur Dioxide: 1.22 μg/m3
Ozone: 107.08 μg/m3
Nitrogen Dioxide: 6.38 μg/m3
Sulphur Dioxide: 1.22 μg/m3
Ozone: 107.08 μg/m3
Astronomical
Sunrise: 5:45 AM
Sun Transit: 1:13 PM
Sunset: 8:42 PM
Daylight: 14 hrs 57 mins
Sun Transit: 1:13 PM
Sunset: 8:42 PM
Daylight: 14 hrs 57 mins
Moonrise: 9:22 PM
Moon Transit: 1:46 AM
Moonset: 6:40 AM
Moon Phase: Full
Moon Illumination: 97.1%
Moon Transit: 1:46 AM
Moonset: 6:40 AM
Moon Phase: Full
Moon Illumination: 97.1%
Best Times for Fishing or Hunting
Major Periods
1:16 AM - 3:46 AM1:23 PM - 3:53 PM
Minor Periods
8:52 PM - 10:22 PM6:10 AM - 7:40 AM
Action Rating: 5 out of 5
Friday, July 31, 2026
Weather Forecast
Partly Cloudy
83.4°F
62.3°F
69°F
80%
0.14 in
68%
0%
6.3 mph
5.5
Air Quality
AQI:
2 - Moderate
PM2.5:
15.76 μg/m3
PM10:
16.22 μg/m3
Carbon Monoxide: 157.71 μg/m3
Nitrogen Dioxide: 7.89 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 85.63 μg/m3
Nitrogen Dioxide: 7.89 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 85.63 μg/m3
Astronomical
Sunrise: 5:46 AM
Sun Transit: 1:13 PM
Sunset: 8:41 PM
Daylight: 14 hrs 55 mins
Sun Transit: 1:13 PM
Sunset: 8:41 PM
Daylight: 14 hrs 55 mins
Moonrise: 9:40 PM
Moon Transit: 2:30 AM
Moonset: 7:50 AM
Moon Phase: Full
Moon Illumination: 92.0%
Moon Transit: 2:30 AM
Moonset: 7:50 AM
Moon Phase: Full
Moon Illumination: 92.0%
Best Times for Fishing or Hunting
Major Periods
2:00 AM - 4:30 AM2:07 PM - 4:37 PM
Minor Periods
9:10 PM - 10:40 PM7:20 AM - 8:50 AM
Action Rating: 4 out of 5
Saturday, August 1, 2026
Weather Forecast
Sunny
71.9°F
56.2°F
64.6°F
75%
0 in
8%
0%
12.5 mph
6.9
Air Quality
AQI:
1 - Good
PM2.5:
4.55 μg/m3
PM10:
4.6 μg/m3
Carbon Monoxide: 134.17 μg/m3
Nitrogen Dioxide: 3.9 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 72.08 μg/m3
Nitrogen Dioxide: 3.9 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 72.08 μg/m3
Astronomical
Sunrise: 5:47 AM
Sun Transit: 1:13 PM
Sunset: 8:39 PM
Daylight: 14 hrs 52 mins
Sun Transit: 1:13 PM
Sunset: 8:39 PM
Daylight: 14 hrs 52 mins
Moonrise: 9:56 PM
Moon Transit: 3:13 AM
Moonset: 9:00 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.9%
Moon Transit: 3:13 AM
Moonset: 9:00 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.9%
Best Times for Fishing or Hunting
Major Periods
2:43 AM - 5:13 AM2:50 PM - 5:20 PM
Minor Periods
9:26 PM - 10:56 PM8:30 AM - 10:00 AM
Action Rating: 2 out of 5
Sunday, August 2, 2026
Weather Forecast
Sunny
72°F
52.8°F
62.4°F
75%
0 in
7%
0%
13.4 mph
6
Air Quality
AQI:
1 - Good
PM2.5:
1.43 μg/m3
PM10:
1.54 μg/m3
Carbon Monoxide: 138.08 μg/m3
Nitrogen Dioxide: 1.64 μg/m3
Sulphur Dioxide: 0.35 μg/m3
Ozone: 58.54 μg/m3
Nitrogen Dioxide: 1.64 μg/m3
Sulphur Dioxide: 0.35 μg/m3
Ozone: 58.54 μg/m3
Astronomical
Sunrise: 5:49 AM
Sun Transit: 1:13 PM
Sunset: 8:38 PM
Daylight: 14 hrs 49 mins
Sun Transit: 1:13 PM
Sunset: 8:38 PM
Daylight: 14 hrs 49 mins
Moonrise: 10:12 PM
Moon Transit: 3:56 AM
Moonset: 10:11 AM
Moon Phase: Waning Gibbous
Moon Illumination: 75.9%
Moon Transit: 3:56 AM
Moonset: 10:11 AM
Moon Phase: Waning Gibbous
Moon Illumination: 75.9%
Best Times for Fishing or Hunting
Major Periods
3:26 AM - 5:56 AM5:20 PM - 7:50 PM
Minor Periods
9:42 PM - 11:12 PM9:41 AM - 11:11 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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