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

-7.6°F
Overcast
Overcast
-19.4°F
-6.6°F
53%
WSW 4.9 mph
7.9 mph
-22.3°F
-12.4°F
0 in
100%
9 mi
1032 mbar
0

Five Day Weather Forecast

Cloudy
Sat
H: -4°F
L: -17°F
Sunny
Sun
H: 7°F
L: -8°F
Overcast
Mon
H: 7°F
L: -13°F
Partly Cloudy
Tue
H: 14°F
L: -1°F
Overcast
Wed
H: 7°F
L: -7°F

Air Quality

AQI: 1 - Good
PM2.5: 10.45 μg/m3
PM10: 10.85 μg/m3
Carbon Monoxide: 213.85 μg/m3
Nitrogen Dioxide: 13.15 μg/m3
Sulphur Dioxide: 2.75 μg/m3
Ozone: 46 μg/m3

Astronomical

Sunrise: 7:41 AM
Sun Transit: 12:20 AM
Sunset: 5:00 PM
Daylight: 9 hrs 19 mins
Moonrise: 10:06 AM
Moon Transit: 4:56 PM
Moonset: 12:03 PM
Moon Phase: First Quarter
Moon Illumination: 34.7%

Best Times for Fishing or Hunting

Major Periods

3:45 AM - 6:15 AM
4:26 PM - 6:56 PM

Minor Periods

12:00 AM - 12:00 AM
9:36 AM - 11:06 AM

Action Rating: 2 out of 5

Cold Weather Advisory issued January 24 at 12:02PM CST until January 25 at 12:00PM CST by NWS Duluth MN

Effective: Sat January 24, 2026, 12:02 PM
Expires: Sun January 25, 2026, 12:15 AM

* WHAT...Very cold wind chills as low as 35 degrees below zero expected. * WHERE...In Minnesota, Crow Wing, Aitkin, Pine, Koochiching, Cass, Itasca, Carlton, St. Louis, Cook and Lake Counties. In Wisconsin, Price, Ashland, Bayfield, Burnett, Douglas, Iron, Sawyer, and Washburn Counties. This includes the Tribal Lands of the Grand Portage Reservation, the Red Cliff Band, the Bad River Reservation, the St. Croix Band in Burnett County, the Lac Courte Oreilles Reservation, the northwestern area of the Lac du Flambeau Band, the Fond du Lac Band, the Mille Lacs Band, Hinckley, Lena Lake, Big Sandy Lake and, East Lake areas and the Bois Forte Band, Deer Creek, Nett Lake and, Lake Vermilion areas. Other locations including Voyageurs National Park, the Apostle Islands National Lakeshore and Madeline Island. The entire Boundary Waters is also included. * WHEN...From 6 PM this evening to noon CST Sunday. * IMPACTS...The dangerously cold wind chills as low as 35 degrees below zero could cause frostbite on exposed skin in as little as 10 minutes. Very cold temperatures can lead to hypothermia with prolonged exposure.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.


Cold Weather Advisory issued January 24 at 1:47PM CST until January 25 at 12:00PM CST by NWS Duluth MN

Effective: Sat January 24, 2026, 1:47 PM
Expires: Sun January 25, 2026, 6:00 AM

* WHAT...Very cold wind chills as low as 30 degrees below zero expected. * WHERE...In Minnesota, Crow Wing, Aitkin, Pine, Koochiching, Cass, Itasca, Carlton, St. Louis, Cook and Lake Counties. In Wisconsin, Price, Ashland, Bayfield, Burnett, Douglas, Iron, Sawyer, and Washburn Counties. This includes the Tribal Lands of the Grand Portage Reservation, the Red Cliff Band, the Bad River Reservation, the St. Croix Band in Burnett County, the Lac Courte Oreilles Reservation, the northwestern area of the Lac du Flambeau Band, the Fond du Lac Band, the Mille Lacs Band, Hinckley, Lena Lake, Big Sandy Lake and, East Lake areas and the Bois Forte Band, Deer Creek, Nett Lake and, Lake Vermilion areas. Other locations including Voyageurs National Park, the Apostle Islands National Lakeshore and Madeline Island. The entire Boundary Waters is also included. * WHEN...From 6 PM this evening to noon CST Sunday. * IMPACTS...The dangerously cold wind chills as low as 25 degrees below zero could cause frostbite on exposed skin in as little as 30 minutes. Very cold temperatures can lead to hypothermia with prolonged exposure.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.


Saturday, January 24, 2026

Weather Forecast

Cloudy
-3.6°F
-17.1°F
-10.6°F
76%
0 in
0%
0%
7.2 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 3.13 μg/m3
PM10: 3.36 μg/m3
Carbon Monoxide: 196.05 μg/m3
Nitrogen Dioxide: 4.36 μg/m3
Sulphur Dioxide: 2.26 μg/m3
Ozone: 60.68 μg/m3

Astronomical

Sunrise: 7:41 AM
Sun Transit: 12:20 AM
Sunset: 5:00 PM
Daylight: 9 hrs 19 mins
Moonrise: 10:06 AM
Moon Transit: 4:56 PM
Moonset: 12:03 PM
Moon Phase: First Quarter
Moon Illumination: 34.7%

Best Times for Fishing or Hunting

Major Periods

3:45 AM - 6:15 AM
4:26 PM - 6:56 PM

Minor Periods

12:00 AM - 12:00 AM
9:36 AM - 11:06 AM

Action Rating: 2 out of 5

Sunday, January 25, 2026

Weather Forecast

Sunny
7.2°F
-7.8°F
-2.7°F
69%
0 in
0%
0%
8.3 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 9.25 μg/m3
PM10: 9.61 μg/m3
Carbon Monoxide: 214.21 μg/m3
Nitrogen Dioxide: 9.54 μg/m3
Sulphur Dioxide: 2.93 μg/m3
Ozone: 52.24 μg/m3

Astronomical

Sunrise: 7:40 AM
Sun Transit: 12:20 AM
Sunset: 5:01 PM
Daylight: 9 hrs 21 mins
Moonrise: 10:26 AM
Moon Transit: 5:45 PM
Moonset: 12:03 AM
Moon Phase: First Quarter
Moon Illumination: 45.8%

Best Times for Fishing or Hunting

Major Periods

4:33 AM - 7:03 AM
5:15 PM - 7:45 PM

Minor Periods

9:56 AM - 11:26 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Monday, January 26, 2026

Weather Forecast

Overcast
6.8°F
-13.2°F
-3°F
72%
0 in
0%
4%
14.1 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 5.67 μg/m3
PM10: 5.84 μg/m3
Carbon Monoxide: 189.09 μg/m3
Nitrogen Dioxide: 4.99 μg/m3
Sulphur Dioxide: 2.41 μg/m3
Ozone: 64.88 μg/m3

Astronomical

Sunrise: 7:39 AM
Sun Transit: 12:20 AM
Sunset: 5:03 PM
Daylight: 9 hrs 24 mins
Moonrise: 10:50 AM
Moon Transit: 6:39 PM
Moonset: 1:23 AM
Moon Phase: First Quarter
Moon Illumination: 57.1%

Best Times for Fishing or Hunting

Major Periods

5:24 AM - 7:54 AM
6:09 PM - 8:39 PM

Minor Periods

10:20 AM - 11:50 AM
12:53 AM - 2:23 AM

Action Rating: 3 out of 5

Tuesday, January 27, 2026

Weather Forecast

Partly Cloudy
14.2°F
-1.1°F
4.9°F
67%
0 in
0%
0%
12.8 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 5.65 μg/m3
PM10: 5.78 μg/m3
Carbon Monoxide: 165.32 μg/m3
Nitrogen Dioxide: 4.91 μg/m3
Sulphur Dioxide: 2 μg/m3
Ozone: 69.4 μg/m3

Astronomical

Sunrise: 7:38 AM
Sun Transit: 12:21 AM
Sunset: 5:04 PM
Daylight: 9 hrs 26 mins
Moonrise: 11:22 AM
Moon Transit: 7:37 PM
Moonset: 2:46 AM
Moon Phase: First Quarter
Moon Illumination: 68.0%

Best Times for Fishing or Hunting

Major Periods

6:20 AM - 8:50 AM
7:07 PM - 9:37 PM

Minor Periods

10:52 AM - 12:22 AM
2:16 AM - 3:46 AM

Action Rating: 2 out of 5

Wednesday, January 28, 2026

Weather Forecast

Overcast
7.4°F
-6.9°F
-1.2°F
86%
0 in
0%
0%
9.2 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 1.97 μg/m3
PM10: 2.05 μg/m3
Carbon Monoxide: 165.16 μg/m3
Nitrogen Dioxide: 2.68 μg/m3
Sulphur Dioxide: 1.44 μg/m3
Ozone: 70.23 μg/m3

Astronomical

Sunrise: 7:37 AM
Sun Transit: 12:21 AM
Sunset: 5:06 PM
Daylight: 9 hrs 29 mins
Moonrise: 12:05 AM
Moon Transit: 8:40 PM
Moonset: 4:07 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 78.1%

Best Times for Fishing or Hunting

Major Periods

7:20 AM - 9:50 AM
8:10 PM - 10:40 PM

Minor Periods

11:35 AM - 1:05 PM
3:37 AM - 5:07 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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