Water Temperature of Lake Superior Near Duluth, MN

Current Water Temperature

67.6°F

Measurement Time: Wednesday, July 29, 2026, 5:40 PM CDT

Temperature Locations

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Local Points of Interest

McQuade Harbor; Lakewood, MN

Lake Superior

Station Name: McQuade Harbor Nearshore, MN
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: 46.86, -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

69.8°F
Sunny
Sunny
69.8°F
85.2°F
94%
SSE 3.6 mph
7.5 mph
83.3°F
63.8°F
0 in
0%
10 mi
990 mbar
0.3

Five Day Weather Forecast

Sunny
Wed
H: 90°F
L: 58°F
Sunny
Thu
H: 90°F
L: 64°F
Partly Cloudy
Fri
H: 83°F
L: 64°F
Sunny
Sat
H: 71°F
L: 55°F
Sunny
Sun
H: 72°F
L: 52°F

Air Quality

AQI: 1 - Good
PM2.5: 10.6 μg/m3
PM10: 11.1 μg/m3
Carbon Monoxide: 212 μg/m3
Nitrogen Dioxide: 4.3 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 75 μg/m3

Astronomical

Sunrise: 5:44 AM
Sun Transit: 1:14 PM
Sunset: 8:44 PM
Daylight: 15 hrs mins
Moonrise: 9:03 PM
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 AM
12:37 AM - 3:07 PM

Minor Periods

8:33 PM - 10:03 PM
4:59 AM - 6:29 AM

Action Rating: 4 out of 5

Wednesday, July 29, 2026

Weather Forecast

Sunny
90°F
57.6°F
73.6°F
67%
0 in
5%
0%
6.7 mph
6.9


Air Quality

AQI: 1 - Good
PM2.5: 10.1 μg/m3
PM10: 10.44 μg/m3
Carbon Monoxide: 170.17 μg/m3
Nitrogen Dioxide: 5.19 μg/m3
Sulphur Dioxide: 0.38 μg/m3
Ozone: 63.96 μg/m3

Astronomical

Sunrise: 5:44 AM
Sun Transit: 1:14 PM
Sunset: 8:44 PM
Daylight: 15 hrs mins
Moonrise: 9:03 PM
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 AM
12:37 AM - 3:07 PM

Minor Periods

8:33 PM - 10:03 PM
4:59 AM - 6:29 AM

Action Rating: 4 out of 5

Thursday, July 30, 2026

Weather Forecast

Sunny
89.8°F
64.2°F
76.3°F
66%
0.41 in
66%
0%
17.4 mph
5.3


Air Quality

AQI: 1 - Good
PM2.5: 14.03 μg/m3
PM10: 14.68 μg/m3
Carbon Monoxide: 196.25 μg/m3
Nitrogen Dioxide: 5.06 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 104.04 μg/m3

Astronomical

Sunrise: 5:45 AM
Sun Transit: 1:14 PM
Sunset: 8:43 PM
Daylight: 14 hrs 57 mins
Moonrise: 9:23 PM
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 AM
1:23 PM - 3:53 PM

Minor Periods

8:53 PM - 10:23 PM
6:10 AM - 7:40 AM

Action Rating: 5 out of 5

Friday, July 31, 2026

Weather Forecast

Partly Cloudy
82.7°F
63.6°F
70.8°F
78%
0.07 in
57%
0%
6.7 mph
5.5


Air Quality

AQI: 1 - Good
PM2.5: 14.76 μg/m3
PM10: 15.17 μg/m3
Carbon Monoxide: 166.38 μg/m3
Nitrogen Dioxide: 9.51 μg/m3
Sulphur Dioxide: 1.72 μg/m3
Ozone: 79.33 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 1:14 PM
Sunset: 8:41 PM
Daylight: 14 hrs 55 mins
Moonrise: 9:40 PM
Moon Transit: 2:31 AM
Moonset: 7:50 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

2:01 AM - 4:31 AM
2:06 PM - 4:36 PM

Minor Periods

9:10 PM - 10:40 PM
7:20 AM - 8:50 AM

Action Rating: 4 out of 5

Saturday, August 1, 2026

Weather Forecast

Sunny
71.3°F
55.2°F
64°F
71%
0 in
6%
0%
13.4 mph
6.9


Air Quality

AQI: 1 - Good
PM2.5: 7.81 μg/m3
PM10: 7.9 μg/m3
Carbon Monoxide: 164.01 μg/m3
Nitrogen Dioxide: 5.19 μg/m3
Sulphur Dioxide: 1.14 μg/m3
Ozone: 90.33 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 1:14 PM
Sunset: 8:40 PM
Daylight: 14 hrs 52 mins
Moonrise: 9:56 PM
Moon Transit: 3:14 AM
Moonset: 9:01 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.9%

Best Times for Fishing or Hunting

Major Periods

2:44 AM - 5:14 AM
2:49 PM - 5:19 PM

Minor Periods

9:26 PM - 10:56 PM
8:31 AM - 10:01 AM

Action Rating: 2 out of 5

Sunday, August 2, 2026

Weather Forecast

Sunny
72.4°F
52.1°F
62.1°F
68%
0 in
17%
0%
13.4 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 11.25 μg/m3
PM10: 11.33 μg/m3
Carbon Monoxide: 219.88 μg/m3
Nitrogen Dioxide: 10.04 μg/m3
Sulphur Dioxide: 1.1 μg/m3
Ozone: 52.38 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 1:14 PM
Sunset: 8:39 PM
Daylight: 14 hrs 50 mins
Moonrise: 10:13 PM
Moon Transit: 3:57 AM
Moonset: 10:12 AM
Moon Phase: Waning Gibbous
Moon Illumination: 75.9%

Best Times for Fishing or Hunting

Major Periods

3:27 AM - 5:57 AM
5:20 PM - 7:50 PM

Minor Periods

9:43 PM - 11:13 PM
9:42 AM - 11:12 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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