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

30.6°F
Mist
Mist
22.5°F
33.1°F
100%
ENE 8.9 mph
14.1 mph
24.2°F
33°F
0 in
100%
0 mi
1016 mbar
1

Five Day Weather Forecast

Patchy moderate snow
Thu
H: 32°F
L: 24°F
Fog
Fri
H: 34°F
L: 27°F
Heavy rain
Sat
H: 44°F
L: 29°F
Partly Cloudy
Sun
H: 43°F
L: 29°F
Sunny
Mon
H: 43°F
L: 26°F

Air Quality

AQI: 1 - Good
PM2.5: 12.15 μg/m3
PM10: 12.95 μg/m3
Carbon Monoxide: 202.85 μg/m3
Nitrogen Dioxide: 4.25 μg/m3
Sulphur Dioxide: 2.65 μg/m3
Ozone: 62 μg/m3

Astronomical

Sunrise: 6:40 AM
Sun Transit: 12:19 AM
Sunset: 5:59 PM
Daylight: 11 hrs 19 mins
Moonrise: 8:53 PM
Moon Transit: 1:36 AM
Moonset: 7:18 AM
Moon Phase: Full
Moon Illumination: 94.0%

Best Times for Fishing or Hunting

Major Periods

1:06 AM - 3:36 AM
1:11 PM - 3:41 PM

Minor Periods

8:23 PM - 9:53 PM
6:48 AM - 8:18 AM

Action Rating: 4 out of 5

Winter Weather Advisory issued March 5 at 8:01AM CST until March 6 at 12:00AM CST by NWS Duluth MN

Effective: Thu March 5, 2026, 8:01 AM
Expires: Thu March 5, 2026, 8:15 PM

* WHAT...Freezing drizzle. Additional ice accumulations around one tenth of an inch. * WHERE...In Minnesota, Carlton and South St. Louis, Southern Cook and Southern Lake Counties. In Wisconsin, Bayfield and Douglas Counties. This includes the Tribal Lands of the Fond du Lac Band, the Red Cliff Band and the Grand Portage Reservation. Other locations including the Apostle Islands National Lakeshore. * WHEN...Until midnight CST tonight. * IMPACTS...Difficult travel conditions are possible. The hazardous conditions could impact the Thursday evening commute.

Slow down and use caution while traveling. Prepare for possible power outages. In Minnesota, call 511 or visit www.511mn.org for Minnesota road information. In Wisconsin, call 511 or visit www.511wi.gov for Wisconsin road information. Use caution while traveling, especially along Highway 61 on the North Shore.


Dense Fog Advisory issued March 5 at 1:58PM CST until March 6 at 12:00PM CST by NWS Duluth MN

Effective: Thu March 5, 2026, 1:58 PM
Expires: Fri March 6, 2026, 2:00 AM

* WHAT...Visibility one quarter to one half mile in dense fog. * WHERE...In Minnesota, Carlton and South St. Louis, Southern Cook and Southern Lake Counties. In Wisconsin, Bayfield and Douglas Counties. This includes the Tribal Lands of the Fond du Lac Band, the Grand Portage Reservation and the Red Cliff Band. Other locations including the Apostle Islands National Lakeshore. * WHEN...Until noon CST Friday. * IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down, use your low-beam headlights and fog lights, and leave plenty of distance ahead of you.
Thursday, March 5, 2026

Weather Forecast

Patchy moderate snow
31.5°F
23.9°F
29.1°F
98%
0.02 in
62%
31%
15 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 2.7 μg/m3
PM10: 2.87 μg/m3
Carbon Monoxide: 192.61 μg/m3
Nitrogen Dioxide: 2.88 μg/m3
Sulphur Dioxide: 1.26 μg/m3
Ozone: 77.84 μg/m3

Astronomical

Sunrise: 6:40 AM
Sun Transit: 12:19 AM
Sunset: 5:59 PM
Daylight: 11 hrs 19 mins
Moonrise: 8:53 PM
Moon Transit: 1:36 AM
Moonset: 7:18 AM
Moon Phase: Full
Moon Illumination: 94.0%

Best Times for Fishing or Hunting

Major Periods

1:06 AM - 3:36 AM
1:11 PM - 3:41 PM

Minor Periods

8:23 PM - 9:53 PM
6:48 AM - 8:18 AM

Action Rating: 4 out of 5

Friday, March 6, 2026

Weather Forecast

Fog
33.8°F
27°F
32.4°F
98%
0.25 in
89%
16%
8.3 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 8.02 μg/m3
PM10: 8.38 μg/m3
Carbon Monoxide: 217.77 μg/m3
Nitrogen Dioxide: 5.55 μg/m3
Sulphur Dioxide: 1.95 μg/m3
Ozone: 63.52 μg/m3

Astronomical

Sunrise: 6:38 AM
Sun Transit: 12:18 AM
Sunset: 6:01 PM
Daylight: 11 hrs 23 mins
Moonrise: 10:03 PM
Moon Transit: 2:19 AM
Moonset: 7:34 AM
Moon Phase: Waning Gibbous
Moon Illumination: 87.6%

Best Times for Fishing or Hunting

Major Periods

1:49 AM - 4:19 AM
1:54 PM - 4:24 PM

Minor Periods

9:33 PM - 11:03 PM
7:04 AM - 8:34 AM

Action Rating: 3 out of 5

Saturday, March 7, 2026

Weather Forecast

Heavy rain
43.7°F
29.1°F
34.5°F
84%
1.85 in
60%
28%
14.3 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 2.97 μg/m3
PM10: 3.26 μg/m3
Carbon Monoxide: 203.97 μg/m3
Nitrogen Dioxide: 4.01 μg/m3
Sulphur Dioxide: 2.13 μg/m3
Ozone: 81.24 μg/m3

Astronomical

Sunrise: 6:36 AM
Sun Transit: 12:18 AM
Sunset: 6:02 PM
Daylight: 11 hrs 26 mins
Moonrise: 11:12 PM
Moon Transit: 3:02 AM
Moonset: 7:53 AM
Moon Phase: Waning Gibbous
Moon Illumination: 79.2%

Best Times for Fishing or Hunting

Major Periods

2:32 AM - 5:02 AM
2:39 PM - 5:09 PM

Minor Periods

12:00 AM - 12:00 AM
7:23 AM - 8:53 AM

Action Rating: 2 out of 5

Sunday, March 8, 2026

Weather Forecast

Partly Cloudy
43.3°F
29.3°F
36.3°F
88%
0 in
0%
0%
16.1 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 3.18 μg/m3
PM10: 3.68 μg/m3
Carbon Monoxide: 176.76 μg/m3
Nitrogen Dioxide: 3.49 μg/m3
Sulphur Dioxide: 2.05 μg/m3
Ozone: 82.12 μg/m3

Astronomical

Sunrise: 6:34 AM
Sun Transit: 12:18 AM
Sunset: 6:04 PM
Daylight: 11 hrs 29 mins
Moonrise: 12:12 AM
Moon Transit: 3:47 AM
Moonset: 8:15 AM
Moon Phase: Waning Gibbous
Moon Illumination: 69.3%

Best Times for Fishing or Hunting

Major Periods

3:17 AM - 5:47 AM
3:25 PM - 5:55 PM

Minor Periods

7:45 AM - 9:15 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Monday, March 9, 2026

Weather Forecast

Sunny
43.4°F
26.4°F
36.2°F
68%
0 in
0%
0%
19.9 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 2.87 μg/m3
PM10: 3.08 μg/m3
Carbon Monoxide: 157.71 μg/m3
Nitrogen Dioxide: 4.98 μg/m3
Sulphur Dioxide: 2.27 μg/m3
Ozone: 70.75 μg/m3

Astronomical

Sunrise: 6:32 AM
Sun Transit: 12:00 AM
Sunset: 6:05 PM
Daylight: 11 hrs 33 mins
Moonrise: 12:22 AM
Moon Transit: 4:34 AM
Moonset: 8:42 AM
Moon Phase: Waning Gibbous
Moon Illumination: 58.5%

Best Times for Fishing or Hunting

Major Periods

4:04 AM - 6:34 AM
4:13 PM - 6:43 PM

Minor Periods

8:12 AM - 9:42 AM
12:00 AM - 12:00 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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