Water Temperature of Lake Superior Near Duluth, MN

Current Water Temperature

52.9°F

Measurement Time: Sunday, July 26, 2026, 12:40 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

86.2°F
Sunny
Sunny
93.6°F
93.7°F
65%
E 7.6 mph
16 mph
86.2°F
73.3°F
0 in
4%
5 mi
1007 mbar
1.5

Five Day Weather Forecast

Sunny
Sun
H: 92°F
L: 66°F
Sunny
Mon
H: 74°F
L: 57°F
Sunny
Tue
H: 75°F
L: 57°F
Sunny
Wed
H: 82°F
L: 56°F
Sunny
Thu
H: 87°F
L: 63°F

Air Quality

AQI: 1 - Good
PM2.5: 17.1 μg/m3
PM10: 17.9 μg/m3
Carbon Monoxide: 181 μg/m3
Nitrogen Dioxide: 3.9 μg/m3
Sulphur Dioxide: 1.1 μg/m3
Ozone: 164 μg/m3

Astronomical

Sunrise: 5:40 AM
Sun Transit: 1:14 PM
Sunset: 8:48 PM
Daylight: 15 hrs 7 mins
Moonrise: 7:29 PM
Moon Transit: 11:20 PM
Moonset: 2:18 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.3%

Best Times for Fishing or Hunting

Major Periods

10:09 AM - 12:39 AM
12:00 AM - 12:00 AM

Minor Periods

6:59 PM - 8:29 PM
1:48 AM - 3:18 AM

Action Rating: 3 out of 5

Dense Fog Advisory issued July 26 at 10:37AM EDT until July 26 at 8:00PM EDT by NWS Marquette MI

Effective: Sun July 26, 2026, 9:37 AM
Expires: Sun July 26, 2026, 7:00 PM

* WHAT...Dense fog will reduce visibility to less than one nautical mile. * WHERE...Portions of Eastern and Western Lake Superior. * WHEN...Until 8 PM EDT /7 PM CDT/ this evening. * IMPACTS...Low visibility will make navigation difficult.

If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass.
Sunday, July 26, 2026

Weather Forecast

Sunny
91.6°F
66.2°F
76.7°F
77%
0.01 in
23%
0%
17.7 mph
7.6


Air Quality

AQI: 2 - Moderate
PM2.5: 19.81 μg/m3
PM10: 20.58 μg/m3
Carbon Monoxide: 198.63 μg/m3
Nitrogen Dioxide: 7.73 μg/m3
Sulphur Dioxide: 1.12 μg/m3
Ozone: 105.38 μg/m3

Astronomical

Sunrise: 5:40 AM
Sun Transit: 1:14 PM
Sunset: 8:48 PM
Daylight: 15 hrs 7 mins
Moonrise: 7:29 PM
Moon Transit: 11:20 PM
Moonset: 2:18 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.3%

Best Times for Fishing or Hunting

Major Periods

10:09 AM - 12:39 AM
12:00 AM - 12:00 AM

Minor Periods

6:59 PM - 8:29 PM
1:48 AM - 3:18 AM

Action Rating: 3 out of 5

Monday, July 27, 2026

Weather Forecast

Sunny
73.6°F
57.2°F
66.4°F
90%
0.01 in
31%
0%
9.8 mph
5.6


Air Quality

AQI: 1 - Good
PM2.5: 5.23 μg/m3
PM10: 5.4 μg/m3
Carbon Monoxide: 147.29 μg/m3
Nitrogen Dioxide: 4.61 μg/m3
Sulphur Dioxide: 0.76 μg/m3
Ozone: 71.92 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 1:14 PM
Sunset: 8:46 PM
Daylight: 15 hrs 5 mins
Moonrise: 8:08 PM
Moon Transit: 12:00 AM
Moonset: 3:15 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:00 AM - 1:30 PM

Minor Periods

7:38 PM - 9:08 PM
2:45 AM - 4:15 AM

Action Rating: 3 out of 5

Tuesday, July 28, 2026

Weather Forecast

Sunny
75.4°F
57°F
65°F
78%
0.01 in
20%
0%
8.1 mph
6.3


Air Quality

AQI: 1 - Good
PM2.5: 3.78 μg/m3
PM10: 3.87 μg/m3
Carbon Monoxide: 158.75 μg/m3
Nitrogen Dioxide: 2.82 μg/m3
Sulphur Dioxide: 0.45 μg/m3
Ozone: 67 μg/m3

Astronomical

Sunrise: 5:43 AM
Sun Transit: 1:14 PM
Sunset: 8:45 PM
Daylight: 15 hrs 2 mins
Moonrise: 8:39 PM
Moon Transit: 12:11 AM
Moonset: 4:20 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:50 AM - 2:20 PM

Minor Periods

8:09 PM - 9:39 PM
3:50 AM - 5:20 AM

Action Rating: 4 out of 5

Wednesday, July 29, 2026

Weather Forecast

Sunny
82.3°F
55.8°F
67.4°F
75%
0.01 in
36%
0%
6.5 mph
7.1


Air Quality

AQI: 1 - Good
PM2.5: 2.27 μg/m3
PM10: 2.37 μg/m3
Carbon Monoxide: 126.25 μg/m3
Nitrogen Dioxide: 2.4 μg/m3
Sulphur Dioxide: 0.31 μg/m3
Ozone: 62 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
87°F
63.1°F
73°F
79%
0.15 in
65%
0%
11.4 mph
5.3


Air Quality

AQI: 1 - Good
PM2.5: 2.05 μg/m3
PM10: 2.14 μg/m3
Carbon Monoxide: 160.88 μg/m3
Nitrogen Dioxide: 3.81 μg/m3
Sulphur Dioxide: 0.33 μg/m3
Ozone: 55.88 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

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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