Water Temperature of Lake Superior Near Duluth, MN

Current Water Temperature

55.2°F

Measurement Time: Tuesday, October 14, 2025, 1:10 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

37.8°F
Light rain
Light rain
28.3°F
39.9°F
100%
ENE 17 mph
25 mph
31.7°F
38.3°F
0.02 in
100%
2 mi
1006 mbar
0.2

Five Day Weather Forecast

Heavy rain
Mon
H: 45°F
L: 37°F
Partly Cloudy
Tue
H: 53°F
L: 37°F
Sunny
Wed
H: 52°F
L: 31°F
Sunny
Thu
H: 51°F
L: 31°F
Sunny
Fri
H: 51°F
L: 30°F

Air Quality

AQI: 1 - Good
PM2.5: 6.65 μg/m3
PM10: 6.85 μg/m3
Carbon Monoxide: 189.85 μg/m3
Nitrogen Dioxide: 3.65 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 88 μg/m3

Astronomical

Sunrise: 5:59 AM
Sun Transit: 1:05 PM
Sunset: 8:13 PM
Daylight: 14 hrs 14 mins
Moonrise: 4:15 PM
Moon Transit: 10:29 PM
Moonset: 4:16 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 81.8%

Best Times for Fishing or Hunting

Major Periods

9:22 AM - 11:52 AM
12:00 AM - 12:00 AM

Minor Periods

3:45 PM - 5:15 PM
3:46 AM - 5:16 AM

Action Rating: 2 out of 5

Dense Fog Advisory issued April 26 at 10:54PM CDT until April 27 at 9:00AM CDT by NWS Duluth MN

Effective: Sun April 26, 2026, 10:54 PM
Expires: Mon April 27, 2026, 9:00 AM

* WHAT...Visibility less than one quarter of a mile in dense fog. * WHERE...In Minnesota, Carlton and South St. Louis Counties. In Wisconsin, Douglas County. This includes the Tribal Lands of the Fond du Lac Band. * WHEN...Until 9 AM CDT Monday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...The fog is expected to come and go through the night.

If driving, slow down, use your low-beam headlights and fog lights, and leave plenty of distance ahead of you.
Monday, April 27, 2026

Weather Forecast

Heavy rain
44.8°F
37°F
40.9°F
97%
1 in
92%
0%
17.4 mph
0.8


Air Quality

AQI: 1 - Good
PM2.5: 6.16 μg/m3
PM10: 7.37 μg/m3
Carbon Monoxide: 174.17 μg/m3
Nitrogen Dioxide: 3.09 μg/m3
Sulphur Dioxide: 1.34 μg/m3
Ozone: 84.56 μg/m3

Astronomical

Sunrise: 5:59 AM
Sun Transit: 1:05 PM
Sunset: 8:13 PM
Daylight: 14 hrs 14 mins
Moonrise: 4:15 PM
Moon Transit: 10:29 PM
Moonset: 4:16 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 81.8%

Best Times for Fishing or Hunting

Major Periods

9:22 AM - 11:52 AM
12:00 AM - 12:00 AM

Minor Periods

3:45 PM - 5:15 PM
3:46 AM - 5:16 AM

Action Rating: 2 out of 5

Tuesday, April 28, 2026

Weather Forecast

Partly Cloudy
52.9°F
36.6°F
44.3°F
66%
0 in
0%
0%
15.7 mph
6.1


Air Quality

AQI: 1 - Good
PM2.5: 2.28 μg/m3
PM10: 2.53 μg/m3
Carbon Monoxide: 161.13 μg/m3
Nitrogen Dioxide: 2.46 μg/m3
Sulphur Dioxide: 1.43 μg/m3
Ozone: 91.72 μg/m3

Astronomical

Sunrise: 5:57 AM
Sun Transit: 1:05 PM
Sunset: 8:14 PM
Daylight: 14 hrs 17 mins
Moonrise: 5:24 PM
Moon Transit: 11:11 PM
Moonset: 4:31 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 89.6%

Best Times for Fishing or Hunting

Major Periods

10:04 AM - 12:34 AM
12:00 AM - 12:00 AM

Minor Periods

4:54 PM - 6:24 PM
4:01 AM - 5:31 AM

Action Rating: 3 out of 5

Wednesday, April 29, 2026

Weather Forecast

Sunny
52.1°F
30.7°F
41.3°F
57%
0 in
0%
0%
8.3 mph
4.9


Air Quality

AQI: 1 - Good
PM2.5: 2.78 μg/m3
PM10: 3.03 μg/m3
Carbon Monoxide: 151.65 μg/m3
Nitrogen Dioxide: 2.95 μg/m3
Sulphur Dioxide: 1.7 μg/m3
Ozone: 82.36 μg/m3

Astronomical

Sunrise: 5:56 AM
Sun Transit: 1:05 PM
Sunset: 8:16 PM
Daylight: 14 hrs 20 mins
Moonrise: 6:34 PM
Moon Transit: 11:53 PM
Moonset: 4:47 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 95.5%

Best Times for Fishing or Hunting

Major Periods

10:46 AM - 1:16 PM
12:00 AM - 12:00 AM

Minor Periods

6:04 PM - 7:34 PM
4:17 AM - 5:47 AM

Action Rating: 3 out of 5

Thursday, April 30, 2026

Weather Forecast

Sunny
51.2°F
30.9°F
40.2°F
62%
0 in
0%
0%
7.8 mph
4.7


Air Quality

AQI: 1 - Good
PM2.5: 2.76 μg/m3
PM10: 3.75 μg/m3
Carbon Monoxide: 170.83 μg/m3
Nitrogen Dioxide: 3.3 μg/m3
Sulphur Dioxide: 1.73 μg/m3
Ozone: 79.88 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 1:04 PM
Sunset: 8:17 PM
Daylight: 14 hrs 23 mins
Moonrise: 7:42 PM
Moon Transit: 12:00 AM
Moonset: 5:03 AM
Moon Phase: Full
Moon Illumination: 99.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:30 AM - 2:00 PM

Minor Periods

7:12 PM - 8:42 PM
4:33 AM - 6:03 AM

Action Rating: 5 out of 5

Friday, May 1, 2026

Weather Forecast

Sunny
51.2°F
30.4°F
38°F
70%
0 in
0%
0%
8.9 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 5.5 μg/m3
PM10: 9.44 μg/m3
Carbon Monoxide: 149.62 μg/m3
Nitrogen Dioxide: 3.57 μg/m3
Sulphur Dioxide: 1.88 μg/m3
Ozone: 82.54 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:04 PM
Sunset: 8:18 PM
Daylight: 14 hrs 26 mins
Moonrise: 8:52 PM
Moon Transit: 12:37 AM
Moonset: 5:22 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:07 AM - 2:37 AM
12:13 AM - 2:43 PM

Minor Periods

8:22 PM - 9:52 PM
4:52 AM - 6:22 AM

Action Rating: 4 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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