Water Temperature of Lake Superior Near Duluth, MN

Current Water Temperature

60.4°F

Measurement Time: Saturday, August 1, 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

68°F
Clear
Clear
64.2°F
68°F
69%
ENE 11 mph
20.4 mph
68°F
57.3°F
0 in
0%
6 mi
1015 mbar
0

Five Day Weather Forecast

Sunny
Sat
H: 83°F
L: 64°F
Sunny
Sun
H: 73°F
L: 56°F
Sunny
Mon
H: 81°F
L: 53°F
Sunny
Tue
H: 81°F
L: 60°F
Sunny
Wed
H: 80°F
L: 51°F

Air Quality

AQI: 1 - Good
PM2.5: 5.3 μg/m3
PM10: 5.6 μg/m3
Carbon Monoxide: 140 μg/m3
Nitrogen Dioxide: 3.5 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 54 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

Small Craft Advisory issued August 1 at 2:39PM CDT until August 2 at 1:00AM CDT by NWS Duluth MN

Effective: Sat August 1, 2026, 2:39 PM
Expires: Sun August 2, 2026, 1:00 AM

* WHAT...East to northeast winds 10 to 15 knots gusting to 25 knots. Waves 2 to 3 ft expected. * WHERE...Two Harbors to Duluth MN, Duluth MN to Port Wing WI, Oak Point to Saxon Harbor WI and Outer Apostle Islands Beyond 5 NM from Mainland. * WHEN...Until 1 AM CDT Sunday. * IMPACTS...Conditions will be hazardous to small craft.

Anyone operating a smaller vessel should avoid navigating in hazardous conditions.
Saturday, August 1, 2026

Weather Forecast

Sunny
83.3°F
64.4°F
73.5°F
63%
0 in
4%
0%
11 mph
7.4


Air Quality

AQI: 1 - Good
PM2.5: 8.12 μg/m3
PM10: 8.28 μg/m3
Carbon Monoxide: 138.71 μg/m3
Nitrogen Dioxide: 2.74 μg/m3
Sulphur Dioxide: 0.54 μg/m3
Ozone: 61.17 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
72.5°F
55.6°F
65.8°F
75%
0 in
8%
0%
13.2 mph
7.6


Air Quality

AQI: 1 - Good
PM2.5: 5.63 μg/m3
PM10: 5.94 μg/m3
Carbon Monoxide: 125.38 μg/m3
Nitrogen Dioxide: 1.95 μg/m3
Sulphur Dioxide: 0.41 μg/m3
Ozone: 61.17 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

Monday, August 3, 2026

Weather Forecast

Sunny
80.9°F
53.2°F
65.7°F
70%
0 in
7%
0%
8.7 mph
6.5


Air Quality

AQI: 1 - Good
PM2.5: 4.71 μg/m3
PM10: 4.87 μg/m3
Carbon Monoxide: 126.75 μg/m3
Nitrogen Dioxide: 3.13 μg/m3
Sulphur Dioxide: 0.48 μg/m3
Ozone: 72.67 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:13 PM
Sunset: 8:37 PM
Daylight: 14 hrs 47 mins
Moonrise: 10:30 PM
Moon Transit: 12:00 AM
Moonset: 11:24 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

10:00 PM - 11:30 PM
10:54 AM - 12:24 AM

Action Rating: 2 out of 5

Tuesday, August 4, 2026

Weather Forecast

Sunny
80.5°F
59.5°F
70.3°F
62%
0.05 in
57%
0%
11.6 mph
5.4


Air Quality

AQI: 1 - Good
PM2.5: 4.8 μg/m3
PM10: 5.02 μg/m3
Carbon Monoxide: 123.79 μg/m3
Nitrogen Dioxide: 3.66 μg/m3
Sulphur Dioxide: 0.85 μg/m3
Ozone: 80 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:13 PM
Sunset: 8:36 PM
Daylight: 14 hrs 44 mins
Moonrise: 10:50 PM
Moon Transit: 5:26 AM
Moonset: 12:40 AM
Moon Phase: Last Quarter
Moon Illumination: 54.6%

Best Times for Fishing or Hunting

Major Periods

4:56 AM - 7:26 AM
5:04 PM - 7:34 PM

Minor Periods

10:20 PM - 11:50 PM
12:10 AM - 1:40 PM

Action Rating: 2 out of 5

Wednesday, August 5, 2026

Weather Forecast

Sunny
80.3°F
50.6°F
65.2°F
51%
0 in
2%
0%
5.6 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 4.66 μg/m3
PM10: 4.75 μg/m3
Carbon Monoxide: 125.73 μg/m3
Nitrogen Dioxide: 5.41 μg/m3
Sulphur Dioxide: 1.16 μg/m3
Ozone: 74.17 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 1:13 PM
Sunset: 8:34 PM
Daylight: 14 hrs 42 mins
Moonrise: 11:15 PM
Moon Transit: 6:15 AM
Moonset: 1:58 PM
Moon Phase: Last Quarter
Moon Illumination: 43.2%

Best Times for Fishing or Hunting

Major Periods

5:45 AM - 8:15 AM
5:55 PM - 8:25 PM

Minor Periods

12:00 AM - 12:00 AM
1:28 PM - 2:58 PM

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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