Water Temperature of Lake Superior Near Duluth, MN

Current Water Temperature

45.1°F

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

Temperature Locations

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Lake Superior

Station Name: Western Lake Superior
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: 46.814, -91.829

Nearby Water Temperatures

Lake Superior, Duluth, MN (5.7 mi)
Lake Superior, Duluth, MN (7 mi)
Knife River, Knife River, MN (9.3 mi)
Duluth Harbor, Duluth, MN (12.7 mi)
Lake Superior, Superior, WI (12.8 mi)
Bois Brule River, Maple, WI (13.1 mi)
Lake Superior, Two Harbors, MN (16.1 mi)
St. Louis River, Scanlon, MN (28.9 mi)
Baptism River, Illgen City, MN (46.7 mi)
Saint Louis River, Hoyt Lakes, MN (47.1 mi)
Chequamegon Bay, Ashland, WI (47.2 mi)
Namekagon River, Cable, WI (50.4 mi)
St. Croix River, Danbury, WI (54.7 mi)
Partrige River, Babbitt, MN (55.8 mi)
Bad River, Ashland, WI (58.3 mi)

Weather Near Duluth, Minnesota

Current Weather

70°F
Mist
Mist
70°F
80.2°F
83%
NE 6.9 mph
14.6 mph
79.5°F
57.3°F
0 in
100%
0 mi
1019 mbar
0

Five Day Weather Forecast

Sunny
Wed
H: 90°F
L: 73°F
Sunny
Thu
H: 77°F
L: 58°F
Sunny
Fri
H: 72°F
L: 56°F
Sunny
Sat
H: 80°F
L: 57°F
Sunny
Sun
H: 84°F
L: 55°F

Air Quality

AQI: 1 - Good
PM2.5: 7.8 μg/m3
PM10: 8.2 μg/m3
Carbon Monoxide: 119 μg/m3
Nitrogen Dioxide: 8.8 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 78 μg/m3

Astronomical

Sunrise: 5:28 AM
Sun Transit: 1:13 PM
Sunset: 8:58 PM
Daylight: 15 hrs 30 mins
Moonrise: 6:47 AM
Moon Transit: 2:35 PM
Moonset: 10:06 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

1:22 AM - 3:52 AM
2:05 PM - 4:35 PM

Minor Periods

9:36 PM - 11:06 PM
6:17 AM - 7:47 AM

Action Rating: 3 out of 5

Dense Smoke Advisory issued July 15 at 6:49AM EDT until July 16 at 8:00AM EDT by NWS Marquette MI

Effective: Wed July 15, 2026, 5:49 AM
Expires: Wed July 15, 2026, 6:00 PM

* WHAT...Dense smoke will reduce visibility to less than one nautical mile. * WHERE...Portions of Central, Eastern and Western Lake Superior. * WHEN...Until 8 AM EDT /7 AM CDT/ Thursday. * 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.


Dense Smoke Advisory issued July 15 at 11:04AM EDT until July 16 at 11:00AM EDT by NWS Marquette MI

Effective: Wed July 15, 2026, 10:04 AM
Expires: Wed July 15, 2026, 10:15 PM

* WHAT...Dense smoke will reduce visibility to less than one nautical mile at times. * WHERE...Portions of Central, Eastern and Western Lake Superior. * WHEN...Until 11 AM EDT /10 AM CDT/ Thursday. * 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.


Dense Smoke Advisory issued July 15 at 3:41PM EDT until July 16 at 11:00AM EDT by NWS Marquette MI

Effective: Wed July 15, 2026, 2:41 PM
Expires: Thu July 16, 2026, 2:45 AM

* WHAT...Dense smoke will reduce visibility to less than one nautical mile at times. * WHERE...Portions of Central, Eastern and Western Lake Superior. * WHEN...Until 11 AM EDT /10 AM CDT/ Thursday. * 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.
Wednesday, July 15, 2026

Weather Forecast

Sunny
90.1°F
73.2°F
80.5°F
49%
0 in
2%
0%
11.4 mph
5.6


Air Quality

AQI: 1 - Good
PM2.5: 8.68 μg/m3
PM10: 8.97 μg/m3
Carbon Monoxide: 125.67 μg/m3
Nitrogen Dioxide: 4.74 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 83.92 μg/m3

Astronomical

Sunrise: 5:28 AM
Sun Transit: 1:13 PM
Sunset: 8:58 PM
Daylight: 15 hrs 30 mins
Moonrise: 6:47 AM
Moon Transit: 2:35 PM
Moonset: 10:06 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

1:22 AM - 3:52 AM
2:05 PM - 4:35 PM

Minor Periods

9:36 PM - 11:06 PM
6:17 AM - 7:47 AM

Action Rating: 3 out of 5

Thursday, July 16, 2026

Weather Forecast

Sunny
76.5°F
58.2°F
69.5°F
62%
0 in
17%
0%
13.9 mph
4.2


Air Quality

AQI: 2 - Moderate
PM2.5: 23.57 μg/m3
PM10: 24.48 μg/m3
Carbon Monoxide: 145.33 μg/m3
Nitrogen Dioxide: 5.1 μg/m3
Sulphur Dioxide: 0.96 μg/m3
Ozone: 84.71 μg/m3

Astronomical

Sunrise: 5:29 AM
Sun Transit: 1:13 PM
Sunset: 8:57 PM
Daylight: 15 hrs 28 mins
Moonrise: 8:12 AM
Moon Transit: 3:28 PM
Moonset: 10:29 PM
Moon Phase: New
Moon Illumination: 2.4%

Best Times for Fishing or Hunting

Major Periods

2:17 AM - 4:47 AM
2:58 PM - 5:28 PM

Minor Periods

9:59 PM - 11:29 PM
7:42 AM - 9:12 AM

Action Rating: 3 out of 5

Friday, July 17, 2026

Weather Forecast

Sunny
72.3°F
56.2°F
64.4°F
88%
0.3 in
80%
0%
12.3 mph
5.5


Air Quality

AQI: 1 - Good
PM2.5: 8.52 μg/m3
PM10: 8.71 μg/m3
Carbon Monoxide: 143.46 μg/m3
Nitrogen Dioxide: 2.35 μg/m3
Sulphur Dioxide: 0.45 μg/m3
Ozone: 80.04 μg/m3

Astronomical

Sunrise: 5:30 AM
Sun Transit: 1:13 PM
Sunset: 8:56 PM
Daylight: 15 hrs 26 mins
Moonrise: 9:32 AM
Moon Transit: 4:17 PM
Moonset: 10:47 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

3:08 AM - 5:38 AM
3:47 PM - 6:17 PM

Minor Periods

10:17 PM - 11:47 PM
9:02 AM - 10:32 AM

Action Rating: 3 out of 5

Saturday, July 18, 2026

Weather Forecast

Sunny
79.9°F
56.9°F
67.8°F
78%
0 in
17%
0%
13.6 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 5.67 μg/m3
PM10: 5.8 μg/m3
Carbon Monoxide: 152.8 μg/m3
Nitrogen Dioxide: 3.5 μg/m3
Sulphur Dioxide: 0.48 μg/m3
Ozone: 85.38 μg/m3

Astronomical

Sunrise: 5:31 AM
Sun Transit: 1:13 PM
Sunset: 8:55 PM
Daylight: 15 hrs 24 mins
Moonrise: 10:48 AM
Moon Transit: 5:02 PM
Moonset: 11:04 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

3:55 AM - 6:25 AM
4:32 PM - 7:02 PM

Minor Periods

12:00 AM - 12:00 AM
10:18 AM - 11:48 AM

Action Rating: 2 out of 5

Sunday, July 19, 2026

Weather Forecast

Sunny
84.3°F
54.5°F
69.6°F
65%
0.01 in
17%
0%
11.2 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 5.43 μg/m3
PM10: 5.59 μg/m3
Carbon Monoxide: 185.5 μg/m3
Nitrogen Dioxide: 7.39 μg/m3
Sulphur Dioxide: 0.86 μg/m3
Ozone: 75 μg/m3

Astronomical

Sunrise: 5:32 AM
Sun Transit: 1:13 PM
Sunset: 8:54 PM
Daylight: 15 hrs 22 mins
Moonrise: 12:00 AM
Moon Transit: 5:46 PM
Moonset: 12:04 AM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

4:39 AM - 7:09 AM
5:16 PM - 7:46 PM

Minor Periods

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

Action Rating: 2 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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