Water Temperature of Duluth Harbor in Duluth, MN

Current Water Temperature

44.2°F

Measurement Time: Thursday, January 23, 2025, 6:18 AM CST

Temperature Locations

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Local Points of Interest

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

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Duluth Harbor

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

Elevation Above Sea Level: 597 feet / 182 meters

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

GPS Coordinates: 46.776, -92.092

Nearby Water Temperatures

Lake Superior, Superior, WI (4.0 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

30.9°F
Overcast
Conditions: Overcast
Humidity: 93%
Feels Like: 22.9°F
Wind: ENE 8.9 mph
Wind Gusts: 13.4 mph
Pressure: 29.84 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 9 mi
UV Index: 0

Five Day Weather Forecast

Overcast
Wed
H: 38°F
L: 26°F
Freezing fog
Thu
H: 37°F
L: 27°F
Overcast
Fri
H: 40°F
L: 31°F
Moderate rain
Sat
H: 45°F
L: 30°F
Light freezing rain
Sun
H: 31°F
L: 21°F

Air Quality

AQI: 1 - Good
PM2.5: 4.63 μg/m3
PM10: 5.74 μg/m3
Carbon Monoxide: 331.15 μg/m3
Nitrogen Dioxide: 3.52 μg/m3
Sulphur Dioxide: 1.3 μg/m3
Ozone: 86 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 12:00 AM
Sunset: 7:10 PM
Daylight: 11 hrs 44 mins
Moonrise: 5:40 PM
Moon Transit: 12:00 AM
Moonset: 7:02 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:28 AM - 1:58 PM

Minor Periods

5:10 PM - 6:40 PM
6:32 AM - 8:02 AM

Action Rating: 3 out of 5

Wednesday, March 12, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 30.4°F
Average Humidity: 86%
Chance of Rain: 0%
Wind: 9.6 mph
UV Index: 0.5

Air Quality

AQI: 1 - Good
PM2.5: 4.31 μg/m3
PM10: 5.31 μg/m3
Carbon Monoxide: 324.79 μg/m3
Nitrogen Dioxide: 3.37 μg/m3
Sulphur Dioxide: 1.18 μg/m3
Ozone: 85.96 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 12:00 AM
Sunset: 7:10 PM
Daylight: 11 hrs 44 mins
Moonrise: 5:40 PM
Moon Transit: 12:00 AM
Moonset: 7:02 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:28 AM - 1:58 PM

Minor Periods

5:10 PM - 6:40 PM
6:32 AM - 8:02 AM

Action Rating: 3 out of 5

Thursday, March 13, 2025

Weather Forecast

Conditions: Freezing fog
Average Temperature: 30.8°F
Average Humidity: 95%
Chance of Rain: 0%
Wind: 11 mph
UV Index: 0.6

Air Quality

AQI: 1 - Good
PM2.5: 11.66 μg/m3
PM10: 13.03 μg/m3
Carbon Monoxide: 345.51 μg/m3
Nitrogen Dioxide: 7.73 μg/m3
Sulphur Dioxide: 2.55 μg/m3
Ozone: 75.48 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:00 AM
Sunset: 7:12 PM
Daylight: 11 hrs 47 mins
Moonrise: 6:49 PM
Moon Transit: 12:36 AM
Moonset: 7:17 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:06 AM - 2:36 AM
12:09 AM - 2:39 PM

Minor Periods

6:19 PM - 7:49 PM
6:47 AM - 8:17 AM

Action Rating: 3 out of 5

Friday, March 14, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 36.1°F
Average Humidity: 98%
Chance of Rain: 0%
Wind: 15.7 mph
UV Index: 0.4

Air Quality

AQI: 2 - Moderate
PM2.5: 19.71 μg/m3
PM10: 21.43 μg/m3
Carbon Monoxide: 374.22 μg/m3
Nitrogen Dioxide: 4.65 μg/m3
Sulphur Dioxide: 2.75 μg/m3
Ozone: 87.64 μg/m3

Astronomical

Sunrise: 7:22 AM
Sun Transit: 12:00 AM
Sunset: 7:13 PM
Daylight: 11 hrs 51 mins
Moonrise: 7:55 PM
Moon Transit: 1:16 AM
Moonset: 7:32 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:46 AM - 3:16 AM
12:49 AM - 3:19 PM

Minor Periods

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

Action Rating: 5 out of 5

Saturday, March 15, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 38.6°F
Average Humidity: 94%
Chance of Rain: 80%
Wind: 16.3 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 13.17 μg/m3
PM10: 14.12 μg/m3
Carbon Monoxide: 373.55 μg/m3
Nitrogen Dioxide: 2.83 μg/m3
Sulphur Dioxide: 1.12 μg/m3
Ozone: 98.48 μg/m3

Astronomical

Sunrise: 7:20 AM
Sun Transit: 12:00 AM
Sunset: 7:14 PM
Daylight: 11 hrs 54 mins
Moonrise: 9:00 PM
Moon Transit: 1:56 AM
Moonset: 7:46 AM
Moon Phase: Full
Moon Illumination: 97.0%

Best Times for Fishing or Hunting

Major Periods

1:26 AM - 3:56 AM
1:28 PM - 3:58 PM

Minor Periods

8:30 PM - 10:00 PM
7:16 AM - 8:46 AM

Action Rating: 4 out of 5

Sunday, March 16, 2025

Weather Forecast

Conditions: Light freezing rain
Average Temperature: 25.1°F
Average Humidity: 62%
Chance of Rain: 81%
Wind: 16.8 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 0.48 μg/m3
PM10: 0.58 μg/m3
Carbon Monoxide: 332.29 μg/m3
Nitrogen Dioxide: 1.04 μg/m3
Sulphur Dioxide: 0.2 μg/m3
Ozone: 81.62 μg/m3

Astronomical

Sunrise: 7:18 AM
Sun Transit: 12:00 AM
Sunset: 7:16 PM
Daylight: 11 hrs 57 mins
Moonrise: 10:07 PM
Moon Transit: 2:35 AM
Moonset: 8:00 AM
Moon Phase: Full
Moon Illumination: 91.9%

Best Times for Fishing or Hunting

Major Periods

2:05 AM - 4:35 AM
2:08 PM - 4:38 PM

Minor Periods

9:37 PM - 11:07 PM
7:30 AM - 9:00 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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