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

26.8°F
Overcast
Overcast
19.2°F
26°F
74%
SSW 6.9 mph
11.9 mph
19.7°F
19.4°F
0 in
100%
9 mi
1016 mbar
0

Five Day Weather Forecast

Moderate or heavy snow showers
Mon
H: 37°F
L: 25°F
Overcast
Tue
H: 31°F
L: 19°F
Partly Cloudy
Wed
H: 31°F
L: 16°F
Partly Cloudy
Thu
H: 25°F
L: 9°F
Patchy moderate snow
Fri
H: 31°F
L: 15°F

Air Quality

AQI: 1 - Good
PM2.5: 21.15 μg/m3
PM10: 21.95 μg/m3
Carbon Monoxide: 250.85 μg/m3
Nitrogen Dioxide: 6.55 μg/m3
Sulphur Dioxide: 3.05 μg/m3
Ozone: 59 μg/m3

Astronomical

Sunrise: 7:21 AM
Sun Transit: 12:22 AM
Sunset: 5:24 PM
Daylight: 10 hrs 3 mins
Moonrise: 1:30 AM
Moon Transit: 5:55 AM
Moonset: 10:14 AM
Moon Phase: Last Quarter
Moon Illumination: 41.2%

Best Times for Fishing or Hunting

Major Periods

5:25 AM - 7:55 AM
5:32 PM - 8:02 PM

Minor Periods

9:44 AM - 11:14 AM
1:00 AM - 2:30 AM

Action Rating: 3 out of 5

Monday, February 9, 2026

Weather Forecast

Moderate or heavy snow showers
37.2°F
25.3°F
29.9°F
81%
0.23 in
69%
10%
11.9 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 13.61 μg/m3
PM10: 14.23 μg/m3
Carbon Monoxide: 235.29 μg/m3
Nitrogen Dioxide: 6.27 μg/m3
Sulphur Dioxide: 2.96 μg/m3
Ozone: 68.52 μg/m3

Astronomical

Sunrise: 7:21 AM
Sun Transit: 12:22 AM
Sunset: 5:24 PM
Daylight: 10 hrs 3 mins
Moonrise: 1:30 AM
Moon Transit: 5:55 AM
Moonset: 10:14 AM
Moon Phase: Last Quarter
Moon Illumination: 41.2%

Best Times for Fishing or Hunting

Major Periods

5:25 AM - 7:55 AM
5:32 PM - 8:02 PM

Minor Periods

9:44 AM - 11:14 AM
1:00 AM - 2:30 AM

Action Rating: 3 out of 5

Tuesday, February 10, 2026

Weather Forecast

Overcast
30.6°F
18.7°F
28.1°F
87%
0 in
0%
0%
14.8 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 1.62 μg/m3
PM10: 1.63 μg/m3
Carbon Monoxide: 188.09 μg/m3
Nitrogen Dioxide: 2.99 μg/m3
Sulphur Dioxide: 1.72 μg/m3
Ozone: 71.88 μg/m3

Astronomical

Sunrise: 7:20 AM
Sun Transit: 12:22 AM
Sunset: 5:26 PM
Daylight: 10 hrs 6 mins
Moonrise: 2:38 AM
Moon Transit: 6:43 AM
Moonset: 10:44 AM
Moon Phase: Last Quarter
Moon Illumination: 30.3%

Best Times for Fishing or Hunting

Major Periods

6:13 AM - 8:43 AM
6:21 PM - 8:51 PM

Minor Periods

10:14 AM - 11:44 AM
2:08 AM - 3:38 AM

Action Rating: 2 out of 5

Wednesday, February 11, 2026

Weather Forecast

Partly Cloudy
31.1°F
15.6°F
22.1°F
76%
0 in
0%
0%
10.7 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 2.07 μg/m3
PM10: 2.16 μg/m3
Carbon Monoxide: 197.29 μg/m3
Nitrogen Dioxide: 3.36 μg/m3
Sulphur Dioxide: 2.35 μg/m3
Ozone: 72.16 μg/m3

Astronomical

Sunrise: 7:18 AM
Sun Transit: 12:22 AM
Sunset: 5:27 PM
Daylight: 10 hrs 9 mins
Moonrise: 3:42 AM
Moon Transit: 7:33 AM
Moonset: 11:23 AM
Moon Phase: Last Quarter
Moon Illumination: 20.5%

Best Times for Fishing or Hunting

Major Periods

7:03 AM - 9:33 AM
7:12 PM - 9:42 PM

Minor Periods

10:53 AM - 12:23 AM
3:12 AM - 4:42 AM

Action Rating: 3 out of 5

Thursday, February 12, 2026

Weather Forecast

Partly Cloudy
24.6°F
9.4°F
17°F
94%
0 in
0%
6%
5.6 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 4.97 μg/m3
PM10: 5.21 μg/m3
Carbon Monoxide: 289.81 μg/m3
Nitrogen Dioxide: 10.21 μg/m3
Sulphur Dioxide: 2.46 μg/m3
Ozone: 58.48 μg/m3

Astronomical

Sunrise: 7:17 AM
Sun Transit: 12:22 AM
Sunset: 5:29 PM
Daylight: 10 hrs 12 mins
Moonrise: 4:40 AM
Moon Transit: 8:25 AM
Moonset: 12:12 AM
Moon Phase: Waning Crescent
Moon Illumination: 12.2%

Best Times for Fishing or Hunting

Major Periods

7:55 AM - 10:25 AM
8:04 PM - 10:34 PM

Minor Periods

11:42 AM - 1:12 PM
4:10 AM - 5:40 AM

Action Rating: 2 out of 5

Friday, February 13, 2026

Weather Forecast

Patchy moderate snow
31.2°F
14.5°F
21.8°F
95%
0.02 in
89%
22%
8.5 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 11.73 μg/m3
PM10: 12.16 μg/m3
Carbon Monoxide: 258.21 μg/m3
Nitrogen Dioxide: 10.76 μg/m3
Sulphur Dioxide: 2.82 μg/m3
Ozone: 56.77 μg/m3

Astronomical

Sunrise: 7:15 AM
Sun Transit: 12:22 AM
Sunset: 5:30 PM
Daylight: 10 hrs 15 mins
Moonrise: 5:28 AM
Moon Transit: 9:18 AM
Moonset: 1:12 PM
Moon Phase: Waning Crescent
Moon Illumination: 5.8%

Best Times for Fishing or Hunting

Major Periods

8:48 AM - 11:18 AM
8:57 PM - 11:27 PM

Minor Periods

12:42 AM - 2:12 PM
4:58 AM - 6:28 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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