Water Temperature of Duluth Harbor in Duluth, MN
Current Water Temperature
55.0°F
Measurement Time: Friday, June 13, 2025, 2:00 AM CDT
Temperature Locations
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Local Points of Interest
Lake Superior; Park Point; Coast Guard Basin; Duluth CanalSponsored Content
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
46.8°F

Conditions: Light rain
Humidity: 93%
Feels Like: 41.2°F
Wind: ENE 12.3 mph
Wind Gusts: 21.1 mph
Humidity: 93%
Feels Like: 41.2°F
Wind: ENE 12.3 mph
Wind Gusts: 21.1 mph
Pressure: 30.17 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 9 mi
UV Index: 0
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 9 mi
UV Index: 0
Five Day Weather Forecast

Fri
H: 50°F
L: 44°F

Sat
H: 49°F
L: 45°F

Sun
H: 60°F
L: 45°F

Mon
H: 78°F
L: 49°F

Tue
H: 57°F
L: 50°F
Air Quality
AQI:
1 - Good
PM2.5:
7.96 μg/m3
PM10:
8.51 μg/m3
Carbon Monoxide: 299.7 μg/m3
Nitrogen Dioxide: 3.52 μg/m3
Sulphur Dioxide: 0.56 μg/m3
Ozone: 60 μg/m3
Nitrogen Dioxide: 3.52 μg/m3
Sulphur Dioxide: 0.56 μg/m3
Ozone: 60 μg/m3
Astronomical
Sunrise: 5:14 AM
Sun Transit: 1:08 PM
Sunset: 9:04 PM
Daylight: 15 hrs 50 mins
Sun Transit: 1:08 PM
Sunset: 9:04 PM
Daylight: 15 hrs 50 mins
Moonrise: 11:35 PM
Moon Transit: 2:50 AM
Moonset: 6:49 AM
Moon Phase: Waning Gibbous
Moon Illumination: 89.2%
Moon Transit: 2:50 AM
Moonset: 6:49 AM
Moon Phase: Waning Gibbous
Moon Illumination: 89.2%
Best Times for Fishing or Hunting
Major Periods
2:20 AM - 4:50 AM2:30 PM - 5:00 PM
Minor Periods
12:00 AM - 12:00 AM6:19 AM - 7:49 AM
Action Rating: 3 out of 5
Friday, June 13, 2025
Weather Forecast
Conditions: Heavy rain
Average Temperature: 46.9°F
Average Humidity: 92%
Average Temperature: 46.9°F
Average Humidity: 92%
Chance of Rain: 88%
Wind: 14.1 mph
UV Index: 0.4
Wind: 14.1 mph
UV Index: 0.4
Air Quality
AQI:
1 - Good
PM2.5:
5.99 μg/m3
PM10:
6.39 μg/m3
Carbon Monoxide: 310.21 μg/m3
Nitrogen Dioxide: 2.79 μg/m3
Sulphur Dioxide: 0.63 μg/m3
Ozone: 63.44 μg/m3
Nitrogen Dioxide: 2.79 μg/m3
Sulphur Dioxide: 0.63 μg/m3
Ozone: 63.44 μg/m3
Astronomical
Sunrise: 5:14 AM
Sun Transit: 1:08 PM
Sunset: 9:04 PM
Daylight: 15 hrs 50 mins
Sun Transit: 1:08 PM
Sunset: 9:04 PM
Daylight: 15 hrs 50 mins
Moonrise: 11:35 PM
Moon Transit: 2:50 AM
Moonset: 6:49 AM
Moon Phase: Waning Gibbous
Moon Illumination: 89.2%
Moon Transit: 2:50 AM
Moonset: 6:49 AM
Moon Phase: Waning Gibbous
Moon Illumination: 89.2%
Best Times for Fishing or Hunting
Major Periods
2:20 AM - 4:50 AM2:30 PM - 5:00 PM
Minor Periods
12:00 AM - 12:00 AM6:19 AM - 7:49 AM
Action Rating: 3 out of 5
Saturday, June 14, 2025
Weather Forecast
Conditions: Moderate rain
Average Temperature: 46.8°F
Average Humidity: 97%
Average Temperature: 46.8°F
Average Humidity: 97%
Chance of Rain: 84%
Wind: 11.6 mph
UV Index: 0.5
Wind: 11.6 mph
UV Index: 0.5
Air Quality
AQI:
1 - Good
PM2.5:
9.19 μg/m3
PM10:
9.8 μg/m3
Carbon Monoxide: 256.56 μg/m3
Nitrogen Dioxide: 2.75 μg/m3
Sulphur Dioxide: 0.65 μg/m3
Ozone: 66.64 μg/m3
Nitrogen Dioxide: 2.75 μg/m3
Sulphur Dioxide: 0.65 μg/m3
Ozone: 66.64 μg/m3
Astronomical
Sunrise: 5:14 AM
Sun Transit: 1:08 PM
Sunset: 9:04 PM
Daylight: 15 hrs 50 mins
Sun Transit: 1:08 PM
Sunset: 9:04 PM
Daylight: 15 hrs 50 mins
Moonrise: 12:35 AM
Moon Transit: 3:43 AM
Moonset: 8:00 AM
Moon Phase: Waning Gibbous
Moon Illumination: 81.2%
Moon Transit: 3:43 AM
Moonset: 8:00 AM
Moon Phase: Waning Gibbous
Moon Illumination: 81.2%
Best Times for Fishing or Hunting
Major Periods
3:13 AM - 5:43 AM3:22 PM - 5:52 PM
Minor Periods
7:30 AM - 9:00 AM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Sunday, June 15, 2025
Weather Forecast
Conditions: Mist
Average Temperature: 51°F
Average Humidity: 91%
Average Temperature: 51°F
Average Humidity: 91%
Chance of Rain: 0%
Wind: 11.2 mph
UV Index: 0.9
Wind: 11.2 mph
UV Index: 0.9
Air Quality
AQI:
1 - Good
PM2.5:
15.29 μg/m3
PM10:
16.98 μg/m3
Carbon Monoxide: 264.99 μg/m3
Nitrogen Dioxide: 3.02 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 70.04 μg/m3
Nitrogen Dioxide: 3.02 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 70.04 μg/m3
Astronomical
Sunrise: 5:13 AM
Sun Transit: 1:09 PM
Sunset: 9:04 PM
Daylight: 15 hrs 51 mins
Sun Transit: 1:09 PM
Sunset: 9:04 PM
Daylight: 15 hrs 51 mins
Moonrise: 12:04 AM
Moon Transit: 4:34 AM
Moonset: 9:15 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.7%
Moon Transit: 4:34 AM
Moonset: 9:15 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.7%
Best Times for Fishing or Hunting
Major Periods
4:04 AM - 6:34 AM4:12 PM - 6:42 PM
Minor Periods
8:45 AM - 10:15 AM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Monday, June 16, 2025
Weather Forecast
Conditions: Moderate rain
Average Temperature: 62.2°F
Average Humidity: 89%
Average Temperature: 62.2°F
Average Humidity: 89%
Chance of Rain: 84%
Wind: 11.2 mph
UV Index: 2.1
Wind: 11.2 mph
UV Index: 2.1
Air Quality
AQI:
2 - Moderate
PM2.5:
24.52 μg/m3
PM10:
26.84 μg/m3
Carbon Monoxide: 369.63 μg/m3
Nitrogen Dioxide: 8.93 μg/m3
Sulphur Dioxide: 1.36 μg/m3
Ozone: 90.88 μg/m3
Nitrogen Dioxide: 8.93 μg/m3
Sulphur Dioxide: 1.36 μg/m3
Ozone: 90.88 μg/m3
Astronomical
Sunrise: 5:13 AM
Sun Transit: 1:09 PM
Sunset: 9:05 PM
Daylight: 15 hrs 51 mins
Sun Transit: 1:09 PM
Sunset: 9:05 PM
Daylight: 15 hrs 51 mins
Moonrise: 12:27 AM
Moon Transit: 5:23 AM
Moonset: 10:32 AM
Moon Phase: Waning Gibbous
Moon Illumination: 61.0%
Moon Transit: 5:23 AM
Moonset: 10:32 AM
Moon Phase: Waning Gibbous
Moon Illumination: 61.0%
Best Times for Fishing or Hunting
Major Periods
4:53 AM - 7:23 AM4:59 PM - 7:29 PM
Minor Periods
10:02 AM - 11:32 AM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Tuesday, June 17, 2025
Weather Forecast
Conditions: Patchy rain nearby
Average Temperature: 53.5°F
Average Humidity: 93%
Average Temperature: 53.5°F
Average Humidity: 93%
Chance of Rain: 0%
Wind: 12.8 mph
UV Index: 0.1
Wind: 12.8 mph
UV Index: 0.1
Air Quality
AQI:
1 - Good
PM2.5:
13.97 μg/m3
PM10:
15.21 μg/m3
Carbon Monoxide: 463.07 μg/m3
Nitrogen Dioxide: 13.88 μg/m3
Sulphur Dioxide: 0.71 μg/m3
Ozone: 82.92 μg/m3
Nitrogen Dioxide: 13.88 μg/m3
Sulphur Dioxide: 0.71 μg/m3
Ozone: 82.92 μg/m3
Astronomical
Sunrise: 5:14 AM
Sun Transit: 1:09 PM
Sunset: 9:05 PM
Daylight: 15 hrs 52 mins
Sun Transit: 1:09 PM
Sunset: 9:05 PM
Daylight: 15 hrs 52 mins
Moonrise: 12:46 AM
Moon Transit: 6:10 AM
Moonset: 11:47 AM
Moon Phase: Last Quarter
Moon Illumination: 49.7%
Moon Transit: 6:10 AM
Moonset: 11:47 AM
Moon Phase: Last Quarter
Moon Illumination: 49.7%
Best Times for Fishing or Hunting
Major Periods
5:40 AM - 8:10 AM5:46 PM - 8:16 PM
Minor Periods
11:17 AM - 12:47 AM12:16 AM - 1:46 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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