Water Temperature of Lake Superior Near Duluth, MN
Current Water Temperature
Measurement Time: Friday, June 20, 2025, 10:20 PM CDT
Temperature Locations
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Station Name: Western Lake Superior
Station Type: Buoy
Data Source: National Data Buoy Center
Elevation Above Sea Level: 587 feet / 179 meters
Nearest Address:
Offshore
Duluth, MN 55804
St. Louis County
GPS Coordinates: 46.814, -91.829
Nearby Water Temperatures
Lake Superior, Duluth, MN (5.7 mi)Lake Superior, Duluth, MN (7.0 mi)
Knife River, Knife River, MN (9.3 mi)
Duluth Harbor, Duluth, MN (12.7 mi)
Lake Superior, Superior, WI (12.8 mi)
Bois Brule River, Maple, WI (13.1 mi)
Lake Superior, Two Harbors, MN (16.1 mi)
St. Louis River, Scanlon, MN (28.9 mi)
Baptism River, Illgen City, MN (46.7 mi)
Saint Louis River, Hoyt Lakes, MN (47.1 mi)
Chequamegon Bay, Ashland, WI (47.2 mi)
Namekagon River, Cable, WI (50.4 mi)
St. Croix River, Danbury, WI (54.7 mi)
Partrige River, Babbitt, MN (55.8 mi)
Bad River, Ashland, WI (58.3 mi)
Weather Near Duluth, Minnesota
Current Weather

Humidity: 89%
Feels Like: 54.4°F
Wind: ENE 11.4 mph
Wind Gusts: 24 mph
Precipitation: 0 in
Cloud Cover: 75%
Visibility: 9 mi
UV Index: 0
Five Day Weather Forecast

Fri
H: 68°F
L: 46°F

Sat
H: 71°F
L: 49°F

Sun
H: 75°F
L: 56°F

Mon
H: 82°F
L: 57°F

Tue
H: 57°F
L: 44°F
Air Quality
Nitrogen Dioxide: 3.15 μg/m3
Sulphur Dioxide: 0.37 μg/m3
Ozone: 81 μg/m3
Astronomical
Sun Transit: 1:09 PM
Sunset: 9:05 PM
Daylight: 15 hrs 52 mins
Moon Transit: 8:30 AM
Moonset: 3:42 PM
Moon Phase: Last Quarter
Moon Illumination: 18.3%
Best Times for Fishing or Hunting
Major Periods
8:00 AM - 10:30 AM8:11 PM - 10:41 PM
Minor Periods
3:12 PM - 4:42 PM1:07 AM - 2:37 AM
Action Rating: 2 out of 5
Beach Hazards Statement issued June 20 at 2:46AM CDT until June 20 at 10:00PM CDT by NWS Duluth MN
Effective: Fri June 20, 2025, 2:46 AM
Expires: Fri June 20, 2025, 10:00 PM
* WHAT...Dangerous swimming conditions are expected along the Lake Superior shoreline due to high wave action and strong rip currents. * WHERE...Minnesota Park Point and Wisconsin Point Beaches. * WHEN...From this afternoon through this evening. * IMPACTS...High wave action can make swimming difficult on days such as this. Incoming waves in rapid succession can tire even an experienced swimmer quickly. Rip currents can usher you away from land. To avoid being swept away, swim parallel to the shore to exit a rip current.
Remain out of the water to avoid hazardous swimming conditions.
Extreme Heat Warning issued June 20 at 2:47PM CDT until June 22 at 9:00PM CDT by NWS Duluth MN
Effective: Fri June 20, 2025, 2:47 PM
Expires: Sat June 21, 2025, 7:15 AM
* WHAT...Dangerously hot conditions with heat index values up to 102 expected. * WHERE...In Minnesota, Crow Wing, Pine, South Aitkin, and South and Cass Counties. In Wisconsin, Price, Ashland, Bayfield, Burnett, Douglas, Iron, Sawyer, and Washburn Counties. This includes the Tribal Lands of the St. Croix Band in Burnett County, the northwestern area of the Lac du Flambeau Band, the Red Cliff Band, the Lac Courte Oreilles Reservation, the Bad River Reservation and the Mille Lacs Band, Hinckley, Lena Lake and, East Lake areas. Other locations including the Apostle Islands National Lakeshore and Madeline Island. * WHEN...From noon Saturday to 9 PM CDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Flood Watch issued June 20 at 2:06PM CDT until June 21 at 7:00AM CDT by NWS Duluth MN
Effective: Fri June 20, 2025, 2:06 PM
Expires: Sat June 21, 2025, 7:00 AM
* WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...In Minnesota, North Cass, Northern Aitkin, Cook, Lake, Carlton, St. Louis and Itasca Counties and Wisconsin, Ashland, Bayfield, Douglas and Iron Counties. This includes the Tribal Lands of the northwestern area of the Lac du Flambeau Band, the Red Cliff Band, the Fond du Lac Band, the Mille Lacs Band, Big Sandy Lake area, the Bad River Reservation, the Grand Portage Reservation and the Bois Forte Band, Nett Lake, Deer Creek and, Lake Vermilion areas. Other locations including the Apostle Islands National Lakeshore, Madeline Island and Voyageurs National Park. The entire Boundary Waters is also included. * WHEN...From 10 PM CDT this evening through Saturday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Low-water crossings may be flooded. * ADDITIONAL DETAILS... - A warm front will bring heavy rainfall which may lead to rapid runoff and flash flooding overnight. - Flood safety information can be found at www.weather.gov/safety/flood.
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. Portage and hiking trails may become slick and potentially impassable and ponding of water could inundate low-lying campsites across the Boundary Waters.
Beach Hazards Statement issued June 20 at 2:46AM CDT until June 20 at 10:00PM CDT by NWS Duluth MN
Effective: Fri June 20, 2025, 2:46 AM
Expires: Fri June 20, 2025, 10:00 PM
* WHAT...Dangerous swimming conditions are expected along the Lake Superior shoreline due to high wave action and strong rip currents. * WHERE...Minnesota Park Point and Wisconsin Point Beaches. * WHEN...From this afternoon through this evening. * IMPACTS...High wave action can make swimming difficult on days such as this. Incoming waves in rapid succession can tire even an experienced swimmer quickly. Rip currents can usher you away from land. To avoid being swept away, swim parallel to the shore to exit a rip current.
Remain out of the water to avoid hazardous swimming conditions.
Weather Forecast
Average Temperature: 56.1°F
Average Humidity: 88%
Wind: 11.4 mph
UV Index: 1.9
Air Quality
Nitrogen Dioxide: 4.17 μg/m3
Sulphur Dioxide: 0.53 μg/m3
Ozone: 60.2 μg/m3
Astronomical
Sun Transit: 1:09 PM
Sunset: 9:05 PM
Daylight: 15 hrs 52 mins
Moon Transit: 8:30 AM
Moonset: 3:42 PM
Moon Phase: Last Quarter
Moon Illumination: 18.3%
Best Times for Fishing or Hunting
Major Periods
8:00 AM - 10:30 AM8:11 PM - 10:41 PM
Minor Periods
3:12 PM - 4:42 PM1:07 AM - 2:37 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 60.6°F
Average Humidity: 91%
Wind: 14.1 mph
UV Index: 2.2
Air Quality
Nitrogen Dioxide: 4.97 μg/m3
Sulphur Dioxide: 0.97 μg/m3
Ozone: 91.44 μg/m3
Astronomical
Sun Transit: 1:09 PM
Sunset: 9:05 PM
Daylight: 15 hrs 52 mins
Moon Transit: 9:23 AM
Moonset: 5:06 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.4%
Best Times for Fishing or Hunting
Major Periods
8:53 AM - 11:23 AM9:05 PM - 11:35 PM
Minor Periods
4:36 PM - 6:06 PM1:29 AM - 2:59 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 64.9°F
Average Humidity: 88%
Wind: 8.3 mph
UV Index: 2.2
Air Quality
Nitrogen Dioxide: 4.15 μg/m3
Sulphur Dioxide: 0.58 μg/m3
Ozone: 89.04 μg/m3
Astronomical
Sun Transit: 1:09 PM
Sunset: 9:05 PM
Daylight: 15 hrs 52 mins
Moon Transit: 10:20 AM
Moonset: 6:33 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.6%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM9:50 AM - 12:20 AM
Minor Periods
6:03 PM - 7:33 PM1:55 AM - 3:25 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 71.7°F
Average Humidity: 66%
Wind: 12.8 mph
UV Index: 2.4
Air Quality
Nitrogen Dioxide: 5.1 μg/m3
Sulphur Dioxide: 1.78 μg/m3
Ozone: 84.84 μg/m3
Astronomical
Sun Transit: 1:09 PM
Sunset: 9:06 PM
Daylight: 15 hrs 52 mins
Moon Transit: 11:21 AM
Moonset: 7:56 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.0%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM10:51 AM - 1:21 PM
Minor Periods
7:26 PM - 8:56 PM2:30 AM - 4:00 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 50.5°F
Average Humidity: 71%
Wind: 13.9 mph
UV Index: 2.4
Air Quality
Nitrogen Dioxide: 7.2 μg/m3
Sulphur Dioxide: 2.36 μg/m3
Ozone: 63.92 μg/m3
Astronomical
Sun Transit: 1:09 PM
Sunset: 9:06 PM
Daylight: 15 hrs 52 mins
Moon Transit: 12:26 AM
Moonset: 9:09 PM
Moon Phase: New
Moon Illumination: 0.0%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM11:56 AM - 2:26 PM
Minor Periods
8:39 PM - 10:09 PM3:17 AM - 4:47 AM
Action Rating: 5 out of 5