Water Temperature of Duluth Harbor in Duluth, MN
Current Water Temperature
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 CanalStation 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

Five Day Weather Forecast

Fri
H: 34°F
L: 30°F

Sat
H: 44°F
L: 26°F

Sun
H: 49°F
L: 32°F

Mon
H: 42°F
L: 27°F

Tue
H: 26°F
L: 23°F
Air Quality
Nitrogen Dioxide: 10.05 μg/m3
Sulphur Dioxide: 2.65 μg/m3
Ozone: 42 μg/m3
Astronomical
Sun Transit: 12:19 AM
Sunset: 6:02 PM
Daylight: 11 hrs 23 mins
Moon Transit: 2:19 AM
Moonset: 7:35 AM
Moon Phase: Waning Gibbous
Moon Illumination: 87.6%
Best Times for Fishing or Hunting
Major Periods
1:49 AM - 4:19 AM1:54 PM - 4:24 PM
Minor Periods
9:33 PM - 11:03 PM7:05 AM - 8:35 AM
Action Rating: 3 out of 5
Dense Fog Advisory issued March 6 at 1:11AM CST until March 6 at 12:00PM CST by NWS Duluth MN
Effective: Fri March 6, 2026, 1:11 AM
Expires: Fri March 6, 2026, 12:00 PM
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Minnesota, Carlton and South St. Louis, Southern Cook and Southern Lake Counties. In Wisconsin, Bayfield and Douglas Counties. This includes the Tribal Lands of the Fond du Lac Band, the Grand Portage Reservation and the Red Cliff Band. Other locations including the Apostle Islands National Lakeshore. * WHEN...Until noon CST today. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...The worst conditions with the poorest visibilities are being reported closer to Lake Superior.
If driving, slow down, use your low-beam headlights and fog lights, and leave plenty of distance ahead of you.
Winter Weather Advisory issued March 6 at 11:31AM CST until March 6 at 1:00PM CST by NWS Duluth MN
Effective: Fri March 6, 2026, 11:31 AM
Expires: Fri March 6, 2026, 11:45 PM
* WHAT...For the first Winter Weather Advisory, freezing drizzle. For the second Winter Weather Advisory, mixed precipitation expected. Total snow accumulations up to one inch and ice accumulations up to 0.10". * WHERE...Carlton and South St. Louis, Southern Cook and Southern Lake Counties. This includes the Tribal Lands of the Fond du Lac Band and the Grand Portage Reservation. * WHEN...For the first Winter Weather Advisory, until 1 PM CST this afternoon. For the second Winter Weather Advisory, from 4 PM this afternoon to 3 AM CST Saturday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Plan on slippery road conditions. The hazardous conditions could impact the Friday evening commute. Roads, and especially bridges and overpasses, will likely become slick and hazardous. * ADDITIONAL DETAILS...For this evening, temperatures will fall below freezing in the west first and transition to below freezing eastward through the evening.
Slow down and use caution while traveling. Call 511 or visit www.511mn.org for Minnesota road information.
Winter Weather Advisory issued March 6 at 11:31AM CST until March 7 at 3:00AM CST by NWS Duluth MN
Effective: Fri March 6, 2026, 11:31 AM
Expires: Fri March 6, 2026, 11:45 PM
* WHAT...For the first Winter Weather Advisory, freezing drizzle. For the second Winter Weather Advisory, mixed precipitation expected. Total snow accumulations up to one inch and ice accumulations up to 0.10". * WHERE...Carlton and South St. Louis, Southern Cook and Southern Lake Counties. This includes the Tribal Lands of the Fond du Lac Band and the Grand Portage Reservation. * WHEN...For the first Winter Weather Advisory, until 1 PM CST this afternoon. For the second Winter Weather Advisory, from 4 PM this afternoon to 3 AM CST Saturday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Plan on slippery road conditions. The hazardous conditions could impact the Friday evening commute. Roads, and especially bridges and overpasses, will likely become slick and hazardous. * ADDITIONAL DETAILS...For this evening, temperatures will fall below freezing in the west first and transition to below freezing eastward through the evening.
Slow down and use caution while traveling. Call 511 or visit www.511mn.org for Minnesota road information.
Dense Fog Advisory issued March 6 at 11:10AM CST until March 6 at 9:00PM CST by NWS Duluth MN
Effective: Fri March 6, 2026, 11:10 AM
Expires: Fri March 6, 2026, 9:00 PM
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Carlton and South St. Louis, Southern Cook and Southern Lake Counties. This includes the Tribal Lands of the Fond du Lac Band and the Grand Portage Reservation. * WHEN...Until 9 PM CST this evening. * IMPACTS...Low visibility could make driving conditions hazardous. In areas where temperatures are near or below freezing, the fog could result in icy roads, sidewalks, and other surfaces. * ADDITIONAL DETAILS...Temperatures will rise above freezing after 1 PM this afternoon ending the freezing fog threat.
If driving, slow down, use your low-beam headlights and fog lights, and leave plenty of distance ahead of you.
Weather Forecast
Air Quality
Nitrogen Dioxide: 5.34 μg/m3
Sulphur Dioxide: 1.54 μg/m3
Ozone: 62.72 μg/m3
Astronomical
Sun Transit: 12:19 AM
Sunset: 6:02 PM
Daylight: 11 hrs 23 mins
Moon Transit: 2:19 AM
Moonset: 7:35 AM
Moon Phase: Waning Gibbous
Moon Illumination: 87.6%
Best Times for Fishing or Hunting
Major Periods
1:49 AM - 4:19 AM1:54 PM - 4:24 PM
Minor Periods
9:33 PM - 11:03 PM7:05 AM - 8:35 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 4.59 μg/m3
Sulphur Dioxide: 1.95 μg/m3
Ozone: 72.84 μg/m3
Astronomical
Sun Transit: 12:19 AM
Sunset: 6:03 PM
Daylight: 11 hrs 26 mins
Moon Transit: 3:03 AM
Moonset: 7:54 AM
Moon Phase: Waning Gibbous
Moon Illumination: 79.2%
Best Times for Fishing or Hunting
Major Periods
2:33 AM - 5:03 AM2:38 PM - 5:08 PM
Minor Periods
12:00 AM - 12:00 AM7:24 AM - 8:54 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.53 μg/m3
Sulphur Dioxide: 2.03 μg/m3
Ozone: 78.72 μg/m3
Astronomical
Sun Transit: 12:19 AM
Sunset: 6:04 PM
Daylight: 11 hrs 30 mins
Moon Transit: 3:48 AM
Moonset: 8:16 AM
Moon Phase: Waning Gibbous
Moon Illumination: 69.3%
Best Times for Fishing or Hunting
Major Periods
3:18 AM - 5:48 AM3:24 PM - 5:54 PM
Minor Periods
7:46 AM - 9:16 AM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 2.97 μg/m3
Sulphur Dioxide: 1.79 μg/m3
Ozone: 87.08 μg/m3
Astronomical
Sun Transit: 12:00 AM
Sunset: 6:06 PM
Daylight: 11 hrs 33 mins
Moon Transit: 4:35 AM
Moonset: 8:43 AM
Moon Phase: Waning Gibbous
Moon Illumination: 58.5%
Best Times for Fishing or Hunting
Major Periods
4:05 AM - 6:35 AM4:12 PM - 6:42 PM
Minor Periods
8:13 AM - 9:43 AM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 2.58 μg/m3
Sulphur Dioxide: 1.73 μg/m3
Ozone: 82.5 μg/m3
Astronomical
Sun Transit: 12:00 AM
Sunset: 6:07 PM
Daylight: 11 hrs 36 mins
Moon Transit: 5:24 AM
Moonset: 9:18 AM
Moon Phase: Last Quarter
Moon Illumination: 47.2%
Best Times for Fishing or Hunting
Major Periods
4:54 AM - 7:24 AM5:03 PM - 7:33 PM
Minor Periods
8:48 AM - 10:18 AM12:58 AM - 2:28 AM
Action Rating: 2 out of 5
