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

46.6°F
Light rain
Light rain
42.4°F
55°F
100%
NE 8.5 mph
11.8 mph
52°F
55.7°F
0.02 in
100%
2 mi
996 mbar
0.3

Five Day Weather Forecast

Heavy rain
Wed
H: 58°F
L: 52°F
Patchy rain nearby
Thu
H: 64°F
L: 47°F
Patchy rain nearby
Fri
H: 61°F
L: 41°F
Patchy rain nearby
Sat
H: 62°F
L: 44°F
Sunny
Sun
H: 64°F
L: 39°F

Air Quality

AQI: 1 - Good
PM2.5: 1.8 μg/m3
PM10: 1.9 μg/m3
Carbon Monoxide: 114 μg/m3
Nitrogen Dioxide: 1.8 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 60 μg/m3

Astronomical

Sunrise: 5:12 AM
Sun Transit: 1:08 PM
Sunset: 9:04 PM
Daylight: 15 hrs 52 mins
Moonrise: 7:52 AM
Moon Transit: 3:55 PM
Moonset: 12:09 AM
Moon Phase: Waxing Crescent
Moon Illumination: 4.6%

Best Times for Fishing or Hunting

Major Periods

2:41 AM - 5:11 AM
3:25 PM - 5:55 PM

Minor Periods

7:22 AM - 8:52 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Small Craft Advisory issued June 17 at 1:41AM CDT until June 18 at 1:00AM CDT by NWS Duluth MN

Effective: Wed June 17, 2026, 1:41 AM
Expires: Wed June 17, 2026, 1:45 PM

* WHAT...Northeast winds 10 to 20 kt with gusts up to 30 kt and waves 1 to 4 ft expected. * WHERE...Two Harbors to Duluth MN and Duluth MN to Port Wing WI. * WHEN...From 11 AM this morning to 1 AM CDT Thursday. * IMPACTS...Conditions will be hazardous to small craft.

Anyone operating a smaller vessel should avoid navigating in hazardous conditions.


Small Craft Advisory issued June 17 at 10:12AM CDT until June 18 at 1:00AM CDT by NWS Duluth MN

Effective: Wed June 17, 2026, 10:12 AM
Expires: Wed June 17, 2026, 10:15 PM

* WHAT...Northeast winds 10 to 15 kt with gusts up to 25 kt and waves 1 to 4 ft expected. * WHERE...Two Harbors to Duluth MN and Duluth MN to Port Wing WI. * WHEN...Until 1 AM CDT Thursday. * IMPACTS...Conditions will be hazardous to small craft.

Anyone operating a smaller vessel should avoid navigating in hazardous conditions.
Wednesday, June 17, 2026

Weather Forecast

Heavy rain
58.1°F
51.8°F
54.5°F
91%
0.9 in
87%
0%
10.7 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 2.84 μg/m3
PM10: 3.33 μg/m3
Carbon Monoxide: 114.58 μg/m3
Nitrogen Dioxide: 3.3 μg/m3
Sulphur Dioxide: 0.38 μg/m3
Ozone: 61.83 μg/m3

Astronomical

Sunrise: 5:12 AM
Sun Transit: 1:08 PM
Sunset: 9:04 PM
Daylight: 15 hrs 52 mins
Moonrise: 7:52 AM
Moon Transit: 3:55 PM
Moonset: 12:09 AM
Moon Phase: Waxing Crescent
Moon Illumination: 4.6%

Best Times for Fishing or Hunting

Major Periods

2:41 AM - 5:11 AM
3:25 PM - 5:55 PM

Minor Periods

7:22 AM - 8:52 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Thursday, June 18, 2026

Weather Forecast

Patchy rain nearby
64.4°F
46.5°F
56.4°F
71%
0.07 in
57%
0%
12.5 mph
6.3


Air Quality

AQI: 1 - Good
PM2.5: 2.97 μg/m3
PM10: 3.23 μg/m3
Carbon Monoxide: 119.25 μg/m3
Nitrogen Dioxide: 3.38 μg/m3
Sulphur Dioxide: 0.58 μg/m3
Ozone: 58.29 μg/m3

Astronomical

Sunrise: 5:12 AM
Sun Transit: 1:08 PM
Sunset: 9:05 PM
Daylight: 15 hrs 52 mins
Moonrise: 9:17 AM
Moon Transit: 4:50 PM
Moonset: 12:42 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.4%

Best Times for Fishing or Hunting

Major Periods

3:38 AM - 6:08 AM
4:20 PM - 6:50 PM

Minor Periods

8:47 AM - 10:17 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Friday, June 19, 2026

Weather Forecast

Patchy rain nearby
60.7°F
41°F
50°F
83%
0.19 in
77%
0%
8.1 mph
4.4


Air Quality

AQI: 1 - Good
PM2.5: 3.18 μg/m3
PM10: 3.23 μg/m3
Carbon Monoxide: 128.63 μg/m3
Nitrogen Dioxide: 5.25 μg/m3
Sulphur Dioxide: 0.77 μg/m3
Ozone: 57.75 μg/m3

Astronomical

Sunrise: 5:13 AM
Sun Transit: 1:08 PM
Sunset: 9:05 PM
Daylight: 15 hrs 52 mins
Moonrise: 10:38 AM
Moon Transit: 5:40 PM
Moonset: 12:06 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.3%

Best Times for Fishing or Hunting

Major Periods

4:30 AM - 7:00 AM
5:10 PM - 7:40 PM

Minor Periods

10:08 AM - 11:38 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Saturday, June 20, 2026

Weather Forecast

Patchy rain nearby
61.9°F
43.6°F
53.2°F
74%
0.01 in
19%
0%
9.6 mph
6.5


Air Quality

AQI: 1 - Good
PM2.5: 2.36 μg/m3
PM10: 2.4 μg/m3
Carbon Monoxide: 121.43 μg/m3
Nitrogen Dioxide: 3.73 μg/m3
Sulphur Dioxide: 0.59 μg/m3
Ozone: 58.21 μg/m3

Astronomical

Sunrise: 5:13 AM
Sun Transit: 1:09 PM
Sunset: 9:05 PM
Daylight: 15 hrs 52 mins
Moonrise: 11:53 AM
Moon Transit: 6:25 PM
Moonset: 12:26 AM
Moon Phase: Waxing Crescent
Moon Illumination: 27.8%

Best Times for Fishing or Hunting

Major Periods

5:18 AM - 7:48 AM
5:55 PM - 8:25 PM

Minor Periods

11:23 AM - 12:53 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Sunday, June 21, 2026

Weather Forecast

Sunny
63.8°F
39.4°F
52.8°F
66%
0 in
5%
0%
8.1 mph
8.4


Air Quality

AQI: 1 - Good
PM2.5: 1.88 μg/m3
PM10: 1.89 μg/m3
Carbon Monoxide: 129.13 μg/m3
Nitrogen Dioxide: 5.91 μg/m3
Sulphur Dioxide: 0.56 μg/m3
Ozone: 41.38 μg/m3

Astronomical

Sunrise: 5:13 AM
Sun Transit: 1:09 PM
Sunset: 9:05 PM
Daylight: 15 hrs 52 mins
Moonrise: 1:05 PM
Moon Transit: 7:08 PM
Moonset: 12:43 AM
Moon Phase: First Quarter
Moon Illumination: 38.5%

Best Times for Fishing or Hunting

Major Periods

6:02 AM - 8:32 AM
6:38 PM - 9:08 PM

Minor Periods

12:35 AM - 2:05 PM
12:13 AM - 1:43 AM

Action Rating: 3 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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