Water Temperature of Lake Superior Near Duluth, MN

Current Water Temperature

37.9°F

Measurement Time: Monday, June 8, 2026, 9:40 AM 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

61°F
Partly cloudy
Partly cloudy
61°F
62.8°F
94%
ESE 3.4 mph
7 mph
62.8°F
58.9°F
0 in
75%
9 mi
1012 mbar
0

Five Day Weather Forecast

Sunny
Fri
H: 76°F
L: 57°F
Sunny
Sat
H: 81°F
L: 55°F
Sunny
Sun
H: 88°F
L: 63°F
Sunny
Mon
H: 90°F
L: 68°F
Sunny
Tue
H: 84°F
L: 65°F

Air Quality

AQI: 1 - Good
PM2.5: 3.1 μg/m3
PM10: 3.5 μg/m3
Carbon Monoxide: 172 μg/m3
Nitrogen Dioxide: 4.7 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 64 μg/m3

Astronomical

Sunrise: 5:24 AM
Sun Transit: 1:13 PM
Sunset: 9:02 PM
Daylight: 15 hrs 38 mins
Moonrise: 1:14 AM
Moon Transit: 9:18 AM
Moonset: 5:38 PM
Moon Phase: Waning Crescent
Moon Illumination: 9.7%

Best Times for Fishing or Hunting

Major Periods

8:48 AM - 11:18 AM
9:02 PM - 11:32 PM

Minor Periods

5:08 PM - 6:38 PM
12:44 AM - 2:14 AM

Action Rating: 3 out of 5

Dense Fog Advisory issued July 9 at 10:45PM EDT until July 10 at 11:00AM EDT by NWS Marquette MI

Effective: Thu July 9, 2026, 9:45 PM
Expires: Fri July 10, 2026, 9:45 AM

* WHAT...Dense fog will reduce visibility to less than one nautical mile. * WHERE...Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM, Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park and Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border. * WHEN...Until 11 AM EDT /10 AM CDT/ Friday. * 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.
Friday, July 10, 2026

Weather Forecast

Sunny
76.3°F
56.9°F
65.7°F
75%
0 in
8%
0%
5.1 mph
7.3


Air Quality

AQI: 1 - Good
PM2.5: 3.82 μg/m3
PM10: 4.35 μg/m3
Carbon Monoxide: 159.67 μg/m3
Nitrogen Dioxide: 4.15 μg/m3
Sulphur Dioxide: 0.29 μg/m3
Ozone: 70.42 μg/m3

Astronomical

Sunrise: 5:24 AM
Sun Transit: 1:13 PM
Sunset: 9:02 PM
Daylight: 15 hrs 38 mins
Moonrise: 1:14 AM
Moon Transit: 9:18 AM
Moonset: 5:38 PM
Moon Phase: Waning Crescent
Moon Illumination: 9.7%

Best Times for Fishing or Hunting

Major Periods

8:48 AM - 11:18 AM
9:02 PM - 11:32 PM

Minor Periods

5:08 PM - 6:38 PM
12:44 AM - 2:14 AM

Action Rating: 3 out of 5

Saturday, July 11, 2026

Weather Forecast

Sunny
80.5°F
55.3°F
68.3°F
80%
0.11 in
65%
0%
5.6 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 7.48 μg/m3
PM10: 8.29 μg/m3
Carbon Monoxide: 188.29 μg/m3
Nitrogen Dioxide: 5.5 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 99.08 μg/m3

Astronomical

Sunrise: 5:25 AM
Sun Transit: 1:13 PM
Sunset: 9:01 PM
Daylight: 15 hrs 37 mins
Moonrise: 1:54 AM
Moon Transit: 10:20 AM
Moonset: 6:58 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:50 AM - 12:20 AM

Minor Periods

6:28 PM - 7:58 PM
1:24 AM - 2:54 AM

Action Rating: 2 out of 5

Sunday, July 12, 2026

Weather Forecast

Sunny
87.9°F
63°F
74.7°F
76%
0.04 in
57%
0%
13.2 mph
8.6


Air Quality

AQI: 1 - Good
PM2.5: 5.5 μg/m3
PM10: 5.86 μg/m3
Carbon Monoxide: 155.33 μg/m3
Nitrogen Dioxide: 3.82 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 101.58 μg/m3

Astronomical

Sunrise: 5:26 AM
Sun Transit: 1:13 PM
Sunset: 9:01 PM
Daylight: 15 hrs 35 mins
Moonrise: 2:48 AM
Moon Transit: 11:27 AM
Moonset: 8:07 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:57 AM - 1:27 PM

Minor Periods

7:37 PM - 9:07 PM
2:18 AM - 3:48 AM

Action Rating: 3 out of 5

Monday, July 13, 2026

Weather Forecast

Sunny
90.4°F
67.6°F
78.4°F
69%
0 in
6%
0%
14.1 mph
9.4


Air Quality

AQI: 1 - Good
PM2.5: 4.67 μg/m3
PM10: 4.91 μg/m3
Carbon Monoxide: 149.16 μg/m3
Nitrogen Dioxide: 3.64 μg/m3
Sulphur Dioxide: 1.08 μg/m3
Ozone: 109.29 μg/m3

Astronomical

Sunrise: 5:26 AM
Sun Transit: 1:13 PM
Sunset: 9:00 PM
Daylight: 15 hrs 34 mins
Moonrise: 3:58 AM
Moon Transit: 12:34 AM
Moonset: 9:00 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:04 AM - 2:34 PM

Minor Periods

8:30 PM - 10:00 PM
3:28 AM - 4:58 AM

Action Rating: 4 out of 5

Tuesday, July 14, 2026

Weather Forecast

Sunny
83.7°F
65.2°F
74.9°F
66%
0.01 in
17%
0%
11.9 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 3.29 μg/m3
PM10: 3.4 μg/m3
Carbon Monoxide: 174.38 μg/m3
Nitrogen Dioxide: 4.55 μg/m3
Sulphur Dioxide: 0.96 μg/m3
Ozone: 96.5 μg/m3

Astronomical

Sunrise: 5:27 AM
Sun Transit: 1:13 PM
Sunset: 8:59 PM
Daylight: 15 hrs 32 mins
Moonrise: 5:20 AM
Moon Transit: 1:37 PM
Moonset: 9:38 PM
Moon Phase: New
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:20 AM - 2:50 AM
1:07 PM - 3:37 PM

Minor Periods

9:08 PM - 10:38 PM
4:50 AM - 6:20 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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