Water Temperature of Duluth Harbor in Duluth, MN

Current Water Temperature

49.3°F

Measurement Time: Friday, November 28, 2025, 2:18 AM CST

Temperature Locations

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Local Points of Interest

Lake Superior; Park Point; Coast Guard Basin; Duluth Canal

Duluth Harbor

Station Name: 9099064 - Duluth, MN
Station Type: Fixed
Data Source: National Data Buoy Center

Elevation Above Sea Level: 597 feet

Nearest Address:
870 Minnesota Ave
Duluth, MN 55802
St. Louis County

GPS Coordinates: 46.776, -92.092

Nearby Water Temperatures

Lake Superior, Superior, WI (4 mi)
Lake Superior, Duluth, MN (8.6 mi)
Lake Superior, Duluth, MN (9.6 mi)
Lake Superior, Duluth, MN (12.7 mi)
St. Louis River, Scanlon, MN (16.3 mi)
Knife River, Knife River, MN (18.4 mi)
Bois Brule River, Maple, WI (23.7 mi)
Lake Superior, Two Harbors, MN (26.2 mi)
Saint Louis River, Hoyt Lakes, MN (48.8 mi)
St. Croix River, Danbury, WI (48.9 mi)
Namekagon River, Cable, WI (55.3 mi)
Baptism River, Illgen City, MN (57.2 mi)
Chequamegon Bay, Ashland, WI (58.8 mi)
Partrige River, Babbitt, MN (58.8 mi)
Dunka River, Babbitt, MN (62.5 mi)

Weather for Duluth, Minnesota

Current Weather

29.1°F
Mist
Mist
27.3°F
30.1°F
100%
ENE 2.2 mph
4.2 mph
29.5°F
23.1°F
0 in
75%
1 mi
1015 mbar
0

Five Day Weather Forecast

Cloudy
Sat
H: 40°F
L: 24°F
Mist
Sun
H: 29°F
L: 21°F
Freezing fog
Mon
H: 35°F
L: 28°F
Moderate or heavy snow showers
Tue
H: 32°F
L: 25°F
Blizzard
Wed
H: 27°F
L: 19°F

Air Quality

AQI: 1 - Good
PM2.5: 21.05 μg/m3
PM10: 21.85 μg/m3
Carbon Monoxide: 383.85 μg/m3
Nitrogen Dioxide: 12.55 μg/m3
Sulphur Dioxide: 4.05 μg/m3
Ozone: 47 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 12:22 AM
Sunset: 5:32 PM
Daylight: 10 hrs 18 mins
Moonrise: 6:07 AM
Moon Transit: 10:10 AM
Moonset: 2:20 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:40 AM - 12:10 AM

Minor Periods

1:50 PM - 3:20 PM
5:37 AM - 7:07 AM

Action Rating: 3 out of 5

Saturday, February 14, 2026

Weather Forecast

Cloudy
39.9°F
23.9°F
30.4°F
87%
0 in
0%
0%
4.3 mph
0.4


Air Quality

AQI: 2 - Moderate
PM2.5: 16.38 μg/m3
PM10: 17.1 μg/m3
Carbon Monoxide: 316.61 μg/m3
Nitrogen Dioxide: 14.21 μg/m3
Sulphur Dioxide: 3.53 μg/m3
Ozone: 54.2 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 12:22 AM
Sunset: 5:32 PM
Daylight: 10 hrs 18 mins
Moonrise: 6:07 AM
Moon Transit: 10:10 AM
Moonset: 2:20 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:40 AM - 12:10 AM

Minor Periods

1:50 PM - 3:20 PM
5:37 AM - 7:07 AM

Action Rating: 3 out of 5

Sunday, February 15, 2026

Weather Forecast

Mist
29.2°F
20.5°F
24.9°F
96%
0 in
0%
0%
4.5 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 10.48 μg/m3
PM10: 10.88 μg/m3
Carbon Monoxide: 262.25 μg/m3
Nitrogen Dioxide: 9.45 μg/m3
Sulphur Dioxide: 2.94 μg/m3
Ozone: 60.12 μg/m3

Astronomical

Sunrise: 7:12 AM
Sun Transit: 12:22 AM
Sunset: 5:33 PM
Daylight: 10 hrs 21 mins
Moonrise: 6:37 AM
Moon Transit: 11:00 AM
Moonset: 3:33 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:30 AM - 1:00 PM

Minor Periods

3:03 PM - 4:33 PM
6:07 AM - 7:37 AM

Action Rating: 3 out of 5

Monday, February 16, 2026

Weather Forecast

Freezing fog
35.4°F
27.5°F
30.8°F
94%
0 in
0%
0%
7.4 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 7.6 μg/m3
PM10: 8.13 μg/m3
Carbon Monoxide: 207.09 μg/m3
Nitrogen Dioxide: 8.17 μg/m3
Sulphur Dioxide: 2.98 μg/m3
Ozone: 64.32 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 12:22 AM
Sunset: 5:35 PM
Daylight: 10 hrs 24 mins
Moonrise: 7:01 AM
Moon Transit: 11:49 AM
Moonset: 4:48 PM
Moon Phase: New
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:19 AM - 1:49 PM

Minor Periods

4:18 PM - 5:48 PM
6:31 AM - 8:01 AM

Action Rating: 4 out of 5

Tuesday, February 17, 2026

Weather Forecast

Moderate or heavy snow showers
32°F
25.4°F
27.9°F
88%
0.09 in
64%
17%
26.4 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 3.61 μg/m3
PM10: 4.29 μg/m3
Carbon Monoxide: 165.83 μg/m3
Nitrogen Dioxide: 3.93 μg/m3
Sulphur Dioxide: 2.02 μg/m3
Ozone: 80.36 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 12:22 AM
Sunset: 5:36 PM
Daylight: 10 hrs 27 mins
Moonrise: 7:21 AM
Moon Transit: 12:35 AM
Moonset: 6:03 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:05 AM - 2:35 PM

Minor Periods

5:33 PM - 7:03 PM
6:51 AM - 8:21 AM

Action Rating: 5 out of 5

Wednesday, February 18, 2026

Weather Forecast

Blizzard
27.1°F
19.1°F
24.3°F
93%
1.12 in
67%
62%
31.1 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 1.01 μg/m3
PM10: 1.02 μg/m3
Carbon Monoxide: 167.89 μg/m3
Nitrogen Dioxide: 1.33 μg/m3
Sulphur Dioxide: 1.06 μg/m3
Ozone: 71.23 μg/m3

Astronomical

Sunrise: 7:07 AM
Sun Transit: 12:22 AM
Sunset: 5:38 PM
Daylight: 10 hrs 31 mins
Moonrise: 7:39 AM
Moon Transit: 1:21 PM
Moonset: 7:18 PM
Moon Phase: New
Moon Illumination: 1.3%

Best Times for Fishing or Hunting

Major Periods

12:11 AM - 2:41 AM
12:51 AM - 3:21 PM

Minor Periods

6:48 PM - 8:18 PM
7:09 AM - 8:39 AM

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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