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

25.3°F
Clear
Clear
19.1°F
25.4°F
54%
WNW 5.1 mph
8.3 mph
14.2°F
12.3°F
0 in
25%
9 mi
1021 mbar
0

Five Day Weather Forecast

Moderate or heavy snow showers
Thu
H: 42°F
L: 20°F
Cloudy
Fri
H: 26°F
L: 12°F
Partly Cloudy
Sat
H: 35°F
L: 16°F
Overcast
Sun
H: 21°F
L: 10°F
Overcast
Mon
H: 16°F
L: 3°F

Air Quality

AQI: 1 - Good
PM2.5: 4.95 μg/m3
PM10: 6.35 μg/m3
Carbon Monoxide: 205.85 μg/m3
Nitrogen Dioxide: 3.55 μg/m3
Sulphur Dioxide: 2.55 μg/m3
Ozone: 81 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 12:00 AM
Sunset: 7:09 PM
Daylight: 11 hrs 43 mins
Moonrise: 4:21 AM
Moon Transit: 8:07 AM
Moonset: 11:56 AM
Moon Phase: Last Quarter
Moon Illumination: 25.6%

Best Times for Fishing or Hunting

Major Periods

7:37 AM - 10:07 AM
7:47 PM - 10:17 PM

Minor Periods

11:26 AM - 12:56 AM
3:51 AM - 5:21 AM

Action Rating: 3 out of 5

Winter Storm Warning issued March 11 at 12:54PM CDT until March 13 at 1:00PM CDT by NWS Duluth MN

Effective: Wed March 11, 2026, 12:54 PM
Expires: Thu March 12, 2026, 6:00 AM

* WHAT...Heavy snow expected. Total snow accumulations between 4 and 8 inches except between 6 and 12 inches for northern Iron County and the higher terrain of the North Shore. Winds gusting as high as 35 mph. * WHERE...In Minnesota, Koochiching, North Itasca, Carlton, St. Louis, and Northern Cook and Lake Counties. In Wisconsin, Ashland, Bayfield, Douglas, and Iron Counties. This includes the Tribal Lands of the Fond du Lac Band, the northwestern area of the Lac du Flambeau Band, the Red Cliff Band, the Bad River Reservation and the Bois Forte Band, Nett Lake, Deer Creek and, Lake Vermilion areas. Other locations including the Apostle Islands National Lakeshore, Madeline Island and Voyageurs National Park. The entire Boundary Waters is also included. * WHEN...From 1 PM Thursday to 1 PM CDT Friday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Thursday evening and Friday morning commutes. * ADDITIONAL DETAILS...Snowfall rates will be intense, possibly exceeding 1" per hour Thursday afternoon and evening.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. 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.


Winter Storm Warning issued March 12 at 1:27AM CDT until March 13 at 1:00PM CDT by NWS Duluth MN

Effective: Thu March 12, 2026, 1:27 AM
Expires: Thu March 12, 2026, 1:30 PM

* WHAT...Heavy snow expected. Total snow accumulations between 4 and 9 inches except between 6 and 14 inches for the higher terrain of the North Shore. Winds gusting as high as 40 mph. * WHERE...In Minnesota, Koochiching, North Itasca, Carlton, St. Louis, and Northern Cook and Lake Counties. In Wisconsin, Ashland, Bayfield, Douglas, and Iron Counties. This includes the Tribal Lands of the northwestern area of the Lac du Flambeau Band, the Fond du Lac Band, the Red Cliff Band, the Bad River Reservation and the Bois Forte Band, Lake Vermilion, Nett Lake and, Deer Creek areas. Other locations including the Apostle Islands National Lakeshore, Madeline Island and Voyageurs National Park. The entire Boundary Waters is also included. * WHEN...From 1 PM this afternoon to 1 PM CDT Friday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Thursday evening and Friday morning commutes. * ADDITIONAL DETAILS...Snowfall rates will be intense, possibly exceeding 1" per hour Thursday afternoon and evening.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. 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.


Thursday, March 12, 2026

Weather Forecast

Moderate or heavy snow showers
41.7°F
20.3°F
28.8°F
69%
0.43 in
70%
8%
16.1 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 4.53 μg/m3
PM10: 5.95 μg/m3
Carbon Monoxide: 188.93 μg/m3
Nitrogen Dioxide: 2.8 μg/m3
Sulphur Dioxide: 2.07 μg/m3
Ozone: 91.32 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 12:00 AM
Sunset: 7:09 PM
Daylight: 11 hrs 43 mins
Moonrise: 4:21 AM
Moon Transit: 8:07 AM
Moonset: 11:56 AM
Moon Phase: Last Quarter
Moon Illumination: 25.6%

Best Times for Fishing or Hunting

Major Periods

7:37 AM - 10:07 AM
7:47 PM - 10:17 PM

Minor Periods

11:26 AM - 12:56 AM
3:51 AM - 5:21 AM

Action Rating: 3 out of 5

Friday, March 13, 2026

Weather Forecast

Cloudy
25.9°F
11.5°F
24.8°F
75%
0 in
0%
3%
21 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 3.06 μg/m3
PM10: 3.91 μg/m3
Carbon Monoxide: 169.81 μg/m3
Nitrogen Dioxide: 2.15 μg/m3
Sulphur Dioxide: 1.64 μg/m3
Ozone: 94.04 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:00 AM
Sunset: 7:11 PM
Daylight: 11 hrs 47 mins
Moonrise: 5:03 AM
Moon Transit: 9:00 AM
Moonset: 1:00 PM
Moon Phase: Waning Crescent
Moon Illumination: 16.4%

Best Times for Fishing or Hunting

Major Periods

8:30 AM - 11:00 AM
8:38 PM - 11:08 PM

Minor Periods

12:30 AM - 2:00 PM
4:33 AM - 6:03 AM

Action Rating: 2 out of 5

Saturday, March 14, 2026

Weather Forecast

Partly Cloudy
34.5°F
15.6°F
24.1°F
70%
0 in
0%
0%
4.3 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 5.17 μg/m3
PM10: 6.26 μg/m3
Carbon Monoxide: 207.61 μg/m3
Nitrogen Dioxide: 5.59 μg/m3
Sulphur Dioxide: 2.69 μg/m3
Ozone: 89.88 μg/m3

Astronomical

Sunrise: 7:22 AM
Sun Transit: 12:00 AM
Sunset: 7:12 PM
Daylight: 11 hrs 50 mins
Moonrise: 5:36 AM
Moon Transit: 9:49 AM
Moonset: 2:11 PM
Moon Phase: Waning Crescent
Moon Illumination: 8.9%

Best Times for Fishing or Hunting

Major Periods

9:28 PM - 11:58 PM
9:19 AM - 11:49 AM

Minor Periods

1:41 PM - 3:11 PM
5:06 AM - 6:36 AM

Action Rating: 2 out of 5

Sunday, March 15, 2026

Weather Forecast

Overcast
21°F
10.4°F
19.2°F
78%
0 in
0%
6%
15.2 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 3.25 μg/m3
PM10: 3.92 μg/m3
Carbon Monoxide: 174.97 μg/m3
Nitrogen Dioxide: 2.86 μg/m3
Sulphur Dioxide: 1.68 μg/m3
Ozone: 91.12 μg/m3

Astronomical

Sunrise: 7:20 AM
Sun Transit: 12:00 AM
Sunset: 7:13 PM
Daylight: 11 hrs 53 mins
Moonrise: 6:02 AM
Moon Transit: 10:38 AM
Moonset: 3:24 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.6%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

2:54 PM - 4:24 PM
5:32 AM - 7:02 AM

Action Rating: 3 out of 5

Monday, March 16, 2026

Weather Forecast

Overcast
16.1°F
2.9°F
8.8°F
79%
0 in
0%
31%
18.1 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 1.7 μg/m3
PM10: 1.95 μg/m3
Carbon Monoxide: 170.85 μg/m3
Nitrogen Dioxide: 1.85 μg/m3
Sulphur Dioxide: 1.42 μg/m3
Ozone: 86 μg/m3

Astronomical

Sunrise: 7:18 AM
Sun Transit: 12:00 AM
Sunset: 7:15 PM
Daylight: 11 hrs 57 mins
Moonrise: 6:24 AM
Moon Transit: 11:26 AM
Moonset: 4:40 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:56 AM - 1:26 PM

Minor Periods

4:10 PM - 5:40 PM
5:54 AM - 7:24 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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