Water Temperature of Lake Superior in Duluth, MN

Current Water Temperature

63.0°F

Measurement Time: Saturday, September 16, 2023, 12:00 AM CDT

Temperature Locations

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Local Points of Interest

Lakewood, MN

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Lake Superior

Station Name: Lakewood Water Plant
Data Source: USGS

Elevation Above Sea Level: 614 feet / 187 meters

Nearest Address:
8126 Congdon Blvd
Duluth, MN 55804
St. Louis County

GPS Coordinates: 46.8619, -91.9600

Nearby Water Temperatures

Lake Superior, Duluth, MN (1.4 mi)
Lake Superior, Duluth, MN (7.0 mi)
Duluth Harbor, Duluth, MN (8.6 mi)
Knife River, Knife River, MN (9.9 mi)
Lake Superior, Superior, WI (10.9 mi)
Lake Superior, Two Harbors, MN (17.6 mi)
Bois Brule River, Maple, WI (20.1 mi)
St. Louis River, Scanlon, MN (24.3 mi)
Saint Louis River, Hoyt Lakes, MN (42.9 mi)
Baptism River, Illgen City, MN (48.6 mi)
Partrige River, Babbitt, MN (52.4 mi)
Chequamegon Bay, Ashland, WI (54.1 mi)
Dunka River, Babbitt, MN (55.8 mi)
St. Croix River, Danbury, WI (56.0 mi)
Namekagon River, Cable, WI (56.3 mi)

Weather for Duluth, Minnesota

Current Weather

59.2°F
Mist
Conditions: Mist
Humidity: 100%
Feels Like: 59.2°F
Wind: E 3.6 mph
Wind Gusts: 4.7 mph
Pressure: 30.13 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 3 mi
UV Index: 1.6

Five Day Weather Forecast

Moderate rain
Fri
H: 82°F
L: 55°F
Overcast
Sat
H: 60°F
L: 56°F
Overcast
Sun
H: 60°F
L: 54°F
Moderate rain
Mon
H: 65°F
L: 56°F
Cloudy
Tue
H: 74°F
L: 57°F

Air Quality

AQI: 2 - Moderate
PM2.5: 20.54 μg/m3
PM10: 20.91 μg/m3
Carbon Monoxide: 438.45 μg/m3
Nitrogen Dioxide: 3.89 μg/m3
Sulphur Dioxide: 3.89 μg/m3
Ozone: 125 μg/m3

Astronomical

Sunrise: 6:42 AM
Sun Transit: 1:03 PM
Sunset: 7:25 PM
Daylight: 12 hrs 42 mins
Moonrise: 9:35 PM
Moon Transit: 4:58 AM
Moonset: 1:13 PM
Moon Phase: Waning Gibbous
Moon Illumination: 67.4%

Best Times for Fishing or Hunting

Major Periods

4:28 AM - 6:58 AM
4:41 PM - 7:11 PM

Minor Periods

9:05 PM - 10:35 PM
12:43 AM - 2:13 PM

Action Rating: 4 out of 5

Dense Fog Advisory issued September 11 at 9:57PM CDT until September 12 at 10:00AM CDT by NWS Duluth MN

Effective: Thu September 11, 2025, 9:57 PM
Expires: Fri September 12, 2025, 10:00 AM

* WHAT...Visibility less than one mile in dense fog. * WHERE...In Minnesota, Carlton and South St. Louis, Southern Cook and Southern Lake Counties. In Wisconsin, Douglas County. This includes the Tribal Lands of the Fond du Lac Band and the Grand Portage Reservation. * WHEN...Until 10 AM CDT Friday. * IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down, use your low-beam headlights and fog lights, and leave plenty of distance ahead of you.


Dense Fog Advisory issued September 11 at 9:57PM CDT until September 12 at 10:00AM CDT by NWS Duluth MN

Effective: Thu September 11, 2025, 9:57 PM
Expires: Fri September 12, 2025, 10:00 AM

* WHAT...Visibility less than one mile in dense fog. * WHERE...In Minnesota, Carlton and South St. Louis, Southern Cook and Southern Lake Counties. In Wisconsin, Douglas County. This includes the Tribal Lands of the Fond du Lac Band and the Grand Portage Reservation. * WHEN...Until 10 AM CDT Friday. * IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down, use your low-beam headlights and fog lights, and leave plenty of distance ahead of you.


Dense Fog Advisory issued September 11 at 9:57PM CDT until September 12 at 10:00AM CDT by NWS Duluth MN

Effective: Thu September 11, 2025, 9:57 PM
Expires: Fri September 12, 2025, 10:00 AM

* WHAT...Visibility less than one mile in dense fog. * WHERE...In Minnesota, Carlton and South St. Louis, Southern Cook and Southern Lake Counties. In Wisconsin, Douglas County. This includes the Tribal Lands of the Fond du Lac Band and the Grand Portage Reservation. * WHEN...Until 10 AM CDT Friday. * IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down, use your low-beam headlights and fog lights, and leave plenty of distance ahead of you.


Dense Fog Advisory issued September 11 at 9:57PM CDT until September 12 at 10:00AM CDT by NWS Duluth MN

Effective: Thu September 11, 2025, 9:57 PM
Expires: Fri September 12, 2025, 10:00 AM

* WHAT...Visibility less than one mile in dense fog. * WHERE...In Minnesota, Carlton and South St. Louis, Southern Cook and Southern Lake Counties. In Wisconsin, Douglas County. This includes the Tribal Lands of the Fond du Lac Band and the Grand Portage Reservation. * WHEN...Until 10 AM CDT Friday. * IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down, use your low-beam headlights and fog lights, and leave plenty of distance ahead of you.


Dense Fog Advisory issued September 11 at 9:57PM CDT until September 12 at 10:00AM CDT by NWS Duluth MN

Effective: Thu September 11, 2025, 9:57 PM
Expires: Fri September 12, 2025, 10:00 AM

* WHAT...Visibility less than one mile in dense fog. * WHERE...In Minnesota, Carlton and South St. Louis, Southern Cook and Southern Lake Counties. In Wisconsin, Douglas County. This includes the Tribal Lands of the Fond du Lac Band and the Grand Portage Reservation. * WHEN...Until 10 AM CDT Friday. * IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down, use your low-beam headlights and fog lights, and leave plenty of distance ahead of you.
Friday, September 12, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 61.6°F
Average Humidity: 91%
Chance of Rain: 73%
Wind: 8.5 mph
UV Index: 1

Air Quality

AQI: 2 - Moderate
PM2.5: 16.72 μg/m3
PM10: 16.99 μg/m3
Carbon Monoxide: 419.36 μg/m3
Nitrogen Dioxide: 5.22 μg/m3
Sulphur Dioxide: 3.13 μg/m3
Ozone: 96 μg/m3

Astronomical

Sunrise: 6:42 AM
Sun Transit: 1:03 PM
Sunset: 7:25 PM
Daylight: 12 hrs 42 mins
Moonrise: 9:35 PM
Moon Transit: 4:58 AM
Moonset: 1:13 PM
Moon Phase: Waning Gibbous
Moon Illumination: 67.4%

Best Times for Fishing or Hunting

Major Periods

4:28 AM - 6:58 AM
4:41 PM - 7:11 PM

Minor Periods

9:05 PM - 10:35 PM
12:43 AM - 2:13 PM

Action Rating: 4 out of 5

Saturday, September 13, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 58.2°F
Average Humidity: 97%
Chance of Rain: 0%
Wind: 13.2 mph
UV Index: 1.1

Air Quality

AQI: 2 - Moderate
PM2.5: 20 μg/m3
PM10: 20.28 μg/m3
Carbon Monoxide: 425.28 μg/m3
Nitrogen Dioxide: 7.41 μg/m3
Sulphur Dioxide: 2.51 μg/m3
Ozone: 92.64 μg/m3

Astronomical

Sunrise: 6:44 AM
Sun Transit: 1:03 PM
Sunset: 7:23 PM
Daylight: 12 hrs 39 mins
Moonrise: 10:21 PM
Moon Transit: 5:58 AM
Moonset: 2:34 PM
Moon Phase: Waning Gibbous
Moon Illumination: 56.4%

Best Times for Fishing or Hunting

Major Periods

5:28 AM - 7:58 AM
5:42 PM - 8:12 PM

Minor Periods

9:51 PM - 11:21 PM
2:04 PM - 3:34 PM

Action Rating: 2 out of 5

Sunday, September 14, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 56.7°F
Average Humidity: 97%
Chance of Rain: 0%
Wind: 14.3 mph
UV Index: 1.2

Air Quality

AQI: 1 - Good
PM2.5: 13.99 μg/m3
PM10: 14.3 μg/m3
Carbon Monoxide: 382.51 μg/m3
Nitrogen Dioxide: 2.6 μg/m3
Sulphur Dioxide: 0.85 μg/m3
Ozone: 101.28 μg/m3

Astronomical

Sunrise: 6:45 AM
Sun Transit: 1:03 PM
Sunset: 7:21 PM
Daylight: 12 hrs 36 mins
Moonrise: 11:19 PM
Moon Transit: 7:00 AM
Moonset: 3:43 PM
Moon Phase: Last Quarter
Moon Illumination: 45.1%

Best Times for Fishing or Hunting

Major Periods

6:30 AM - 9:00 AM
6:44 PM - 9:14 PM

Minor Periods

12:00 AM - 12:00 AM
3:13 PM - 4:43 PM

Action Rating: 3 out of 5

Monday, September 15, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 60.7°F
Average Humidity: 98%
Chance of Rain: 89%
Wind: 9.6 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 14.74 μg/m3
PM10: 15.07 μg/m3
Carbon Monoxide: 360.9 μg/m3
Nitrogen Dioxide: 4.11 μg/m3
Sulphur Dioxide: 1.26 μg/m3
Ozone: 91.56 μg/m3

Astronomical

Sunrise: 6:46 AM
Sun Transit: 1:02 PM
Sunset: 7:19 PM
Daylight: 12 hrs 32 mins
Moonrise: 12:19 AM
Moon Transit: 8:01 AM
Moonset: 4:38 PM
Moon Phase: Last Quarter
Moon Illumination: 34.0%

Best Times for Fishing or Hunting

Major Periods

7:31 AM - 10:01 AM
7:45 PM - 10:15 PM

Minor Periods

4:08 PM - 5:38 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, September 16, 2025

Weather Forecast

Conditions: Cloudy
Average Temperature: 63.2°F
Average Humidity: 90%
Chance of Rain: 0%
Wind: 7.6 mph
UV Index: 4

Air Quality

AQI: 2 - Moderate
PM2.5: 20.15 μg/m3
PM10: 20.81 μg/m3
Carbon Monoxide: 430.91 μg/m3
Nitrogen Dioxide: 9.24 μg/m3
Sulphur Dioxide: 1.39 μg/m3
Ozone: 93.31 μg/m3

Astronomical

Sunrise: 6:48 AM
Sun Transit: 1:02 PM
Sunset: 7:17 PM
Daylight: 12 hrs 29 mins
Moonrise: 12:30 AM
Moon Transit: 9:00 AM
Moonset: 5:18 PM
Moon Phase: Last Quarter
Moon Illumination: 23.8%

Best Times for Fishing or Hunting

Major Periods

8:30 AM - 11:00 AM
8:42 PM - 11:12 PM

Minor Periods

4:48 PM - 6:18 PM
12:00 AM - 12:00 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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