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

21.2°F
Mist
Mist
10.7°F
24.4°F
100%
ESE 9.4 mph
12 mph
14.8°F
21.2°F
0.02 in
100%
2 mi
1010 mbar
0

Five Day Weather Forecast

Moderate or heavy snow showers
Sun
H: 26°F
L: 11°F
Mist
Mon
H: 29°F
L: 10°F
Mist
Tue
H: 33°F
L: 29°F
Mist
Wed
H: 35°F
L: 24°F
Freezing fog
Thu
H: 33°F
L: 19°F

Air Quality

AQI: 1 - Good
PM2.5: 6.45 μg/m3
PM10: 6.55 μg/m3
Carbon Monoxide: 182.85 μg/m3
Nitrogen Dioxide: 5.45 μg/m3
Sulphur Dioxide: 1.95 μg/m3
Ozone: 66 μg/m3

Astronomical

Sunrise: 7:53 AM
Sun Transit: 12:13 AM
Sunset: 4:34 PM
Daylight: 8 hrs 41 mins
Moonrise: 6:09 PM
Moon Transit: 1:07 AM
Moonset: 9:14 AM
Moon Phase: Full
Moon Illumination: 98.1%

Best Times for Fishing or Hunting

Major Periods

12:37 AM - 3:07 AM
12:49 AM - 3:19 PM

Minor Periods

5:39 PM - 7:09 PM
8:44 AM - 10:14 AM

Action Rating: 3 out of 5

Winter Weather Advisory issued January 4 at 2:31AM CST until January 5 at 12:00AM CST by NWS Duluth MN

Effective: Sun January 4, 2026, 2:31 AM
Expires: Sun January 4, 2026, 2:45 PM

* WHAT...Mixed precipitation expected. Total snow and sleet accumulations up to two inches and ice accumulations around a light glaze. * WHERE...Price, Burnett, Douglas, Sawyer, and Washburn Counties. This includes the Tribal Lands of the Lac Courte Oreilles Reservation and the St. Croix Band in Burnett County. * WHEN...From 11 AM this morning to midnight CST tonight. * IMPACTS...Plan on slippery road conditions.

Slow down and use caution while traveling. Call 511 or visit www.511wi.gov for Wisconsin road information.


Winter Weather Advisory issued January 4 at 9:45AM CST until January 5 at 12:00AM CST by NWS Duluth MN

Effective: Sun January 4, 2026, 9:45 AM
Expires: Mon January 5, 2026, 12:00 AM

* WHAT...Mixed precipitation expected. Total snow and sleet accumulations up to two inches and ice accumulations around a light glaze. * WHERE...Price, Burnett, Douglas, Sawyer, and Washburn Counties. This includes the Tribal Lands of the Lac Courte Oreilles Reservation and the St. Croix Band in Burnett County. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions.

Slow down and use caution while traveling. Call 511 or visit www.511wi.gov for Wisconsin road information.


Winter Weather Advisory issued January 4 at 2:31AM CST until January 4 at 9:00PM CST by NWS Duluth MN

Effective: Sun January 4, 2026, 2:31 AM
Expires: Sun January 4, 2026, 2:45 PM

* WHAT...Mixed precipitation expected. Total snow and sleet accumulations up to two inches and ice accumulations around a light glaze. * WHERE...Crow Wing, Aitkin, Pine, North Cass, South Itasca, and Carlton and South St. Louis Counties. This includes the Tribal Lands of the Fond du Lac Band and the Mille Lacs Band, Big Sandy Lake, Hinckley, Lena Lake and, East Lake areas. * WHEN...From 11 AM this morning to 9 PM CST this evening. * IMPACTS...Plan on slippery road conditions.

Slow down and use caution while traveling. Call 511 or visit www.511mn.org for Minnesota road information.


Winter Weather Advisory issued January 4 at 9:45AM CST until January 5 at 12:00AM CST by NWS Duluth MN

Effective: Sun January 4, 2026, 9:45 AM
Expires: Mon January 5, 2026, 12:00 AM

* WHAT...Mixed precipitation expected. Total snow and sleet accumulations up to two inches and ice accumulations around a light glaze. * WHERE...Crow Wing, Aitkin, Pine, North Cass, South Itasca, and Carlton and South St. Louis Counties. This includes the Tribal Lands of the Fond du Lac Band and the Mille Lacs Band, Big Sandy Lake, East Lake, Hinckley and, Lena Lake areas. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Areas of light freezing drizzle persist into this evening following the snow and sleet.

Slow down and use caution while traveling. Call 511 or visit www.511mn.org for Minnesota road information.


Winter Weather Advisory issued January 4 at 2:31AM CST until January 5 at 12:00AM CST by NWS Duluth MN

Effective: Sun January 4, 2026, 2:31 AM
Expires: Sun January 4, 2026, 2:45 PM

* WHAT...Mixed precipitation expected. Total snow accumulations between 2 and 4 inches and ice accumulations around a light glaze. * WHERE...Ashland, Bayfield, and Iron Counties. This includes the Tribal Lands of the Red Cliff Band, the Bad River Reservation and the northwestern area of the Lac du Flambeau Band. Other locations including the Apostle Islands National Lakeshore and Madeline Island. * WHEN...From 11 AM this morning to midnight CST tonight. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Heavy snowfall rates up to 1 inch per hour late this afternoon into the evening could lead to visibility of one quarter of a mile or less.

Slow down and use caution while traveling. Call 511 or visit www.511wi.gov for Wisconsin road information.


Winter Weather Advisory issued January 4 at 9:45AM CST until January 5 at 12:00AM CST by NWS Duluth MN

Effective: Sun January 4, 2026, 9:45 AM
Expires: Mon January 5, 2026, 12:00 AM

* WHAT...Mixed precipitation expected. Total snow accumulations between 2 and 4 inches and ice accumulations around a light glaze. * WHERE...Ashland, Bayfield, and Iron Counties. This includes the Tribal Lands of the northwestern area of the Lac du Flambeau Band, the Bad River Reservation and the Red Cliff Band. Other locations including Madeline Island and the Apostle Islands National Lakeshore. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Heavy snowfall rates up to 1 inch per hour late this afternoon into the evening could lead to visibility of one quarter of a mile or less.

Slow down and use caution while traveling. Call 511 or visit www.511wi.gov for Wisconsin road information.
Sunday, January 4, 2026

Weather Forecast

Moderate or heavy snow showers
25.9°F
11.1°F
17.4°F
84%
0.73 in
88%
31%
11.2 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 6.31 μg/m3
PM10: 6.61 μg/m3
Carbon Monoxide: 213.65 μg/m3
Nitrogen Dioxide: 6.57 μg/m3
Sulphur Dioxide: 2.8 μg/m3
Ozone: 67.88 μg/m3

Astronomical

Sunrise: 7:53 AM
Sun Transit: 12:13 AM
Sunset: 4:34 PM
Daylight: 8 hrs 41 mins
Moonrise: 6:09 PM
Moon Transit: 1:07 AM
Moonset: 9:14 AM
Moon Phase: Full
Moon Illumination: 98.1%

Best Times for Fishing or Hunting

Major Periods

12:37 AM - 3:07 AM
12:49 AM - 3:19 PM

Minor Periods

5:39 PM - 7:09 PM
8:44 AM - 10:14 AM

Action Rating: 3 out of 5

Monday, January 5, 2026

Weather Forecast

Mist
28.6°F
10°F
20.8°F
94%
0.12 in
81%
7%
4.5 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 6.03 μg/m3
PM10: 6.13 μg/m3
Carbon Monoxide: 221.65 μg/m3
Nitrogen Dioxide: 6.09 μg/m3
Sulphur Dioxide: 2.19 μg/m3
Ozone: 59.64 μg/m3

Astronomical

Sunrise: 7:53 AM
Sun Transit: 12:13 AM
Sunset: 4:35 PM
Daylight: 8 hrs 42 mins
Moonrise: 7:32 PM
Moon Transit: 2:05 AM
Moonset: 9:43 AM
Moon Phase: Full
Moon Illumination: 93.7%

Best Times for Fishing or Hunting

Major Periods

1:35 AM - 4:05 AM
1:44 PM - 4:14 PM

Minor Periods

7:02 PM - 8:32 PM
9:13 AM - 10:43 AM

Action Rating: 4 out of 5

Tuesday, January 6, 2026

Weather Forecast

Mist
32.9°F
28.6°F
30.1°F
95%
0 in
0%
4%
6.5 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 5.52 μg/m3
PM10: 5.58 μg/m3
Carbon Monoxide: 309.25 μg/m3
Nitrogen Dioxide: 10.37 μg/m3
Sulphur Dioxide: 2.78 μg/m3
Ozone: 42 μg/m3

Astronomical

Sunrise: 7:53 AM
Sun Transit: 12:14 AM
Sunset: 4:36 PM
Daylight: 8 hrs 44 mins
Moonrise: 8:50 PM
Moon Transit: 2:57 AM
Moonset: 10:05 AM
Moon Phase: Waning Gibbous
Moon Illumination: 87.1%

Best Times for Fishing or Hunting

Major Periods

2:27 AM - 4:57 AM
2:34 PM - 5:04 PM

Minor Periods

8:20 PM - 9:50 PM
9:35 AM - 11:05 AM

Action Rating: 3 out of 5

Wednesday, January 7, 2026

Weather Forecast

Mist
34.5°F
23.7°F
30.7°F
95%
0 in
0%
0%
8.5 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 4.87 μg/m3
PM10: 5.11 μg/m3
Carbon Monoxide: 205.77 μg/m3
Nitrogen Dioxide: 7.4 μg/m3
Sulphur Dioxide: 2.23 μg/m3
Ozone: 56.04 μg/m3

Astronomical

Sunrise: 7:52 AM
Sun Transit: 12:14 AM
Sunset: 4:38 PM
Daylight: 8 hrs 45 mins
Moonrise: 10:03 PM
Moon Transit: 3:44 AM
Moonset: 10:23 AM
Moon Phase: Waning Gibbous
Moon Illumination: 78.6%

Best Times for Fishing or Hunting

Major Periods

3:14 AM - 5:44 AM
3:19 PM - 5:49 PM

Minor Periods

9:33 PM - 11:03 PM
9:53 AM - 11:23 AM

Action Rating: 2 out of 5

Thursday, January 8, 2026

Weather Forecast

Freezing fog
33.1°F
18.9°F
26.2°F
97%
0.04 in
76%
27%
4.5 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 12.53 μg/m3
PM10: 12.93 μg/m3
Carbon Monoxide: 254.9 μg/m3
Nitrogen Dioxide: 16.23 μg/m3
Sulphur Dioxide: 2.46 μg/m3
Ozone: 36.08 μg/m3

Astronomical

Sunrise: 7:52 AM
Sun Transit: 12:15 AM
Sunset: 4:39 PM
Daylight: 8 hrs 47 mins
Moonrise: 11:13 PM
Moon Transit: 4:28 AM
Moonset: 10:39 AM
Moon Phase: Waning Gibbous
Moon Illumination: 68.7%

Best Times for Fishing or Hunting

Major Periods

3:58 AM - 6:28 AM
4:02 PM - 6:32 PM

Minor Periods

12:00 AM - 12:00 AM
10:09 AM - 11:39 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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