Water Temperature of Lake Superior in Duluth, MN

Current Water Temperature

63.0°F 17.2°C
Cool Brisk & Refreshing
63.0°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Feels brisk on entry. Great for short dips; wetsuit recommended for extended swimming or water sports.

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

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 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 mi)
Namekagon River, Cable, WI (56.3 mi)

Weather for Duluth, Minnesota

Current Weather

30.2°F
Clear
Conditions: Clear
Humidity: 77%
Feels Like: 23.5°F
Wind: NNW 3.9 mph
Wind Gusts: 4 mph
Pressure: 30.19 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 12.6 mi
UV Index: 0

Five-Day Weather Forecast

Overcast
Fri
H: 36°F
L: 27°F
Overcast
Sat
H: 40°F
L: 27°F
Overcast
Sun
H: 45°F
L: 32°F
Overcast
Mon
H: 48°F
L: 33°F
Overcast
Tue
H: 51°F
L: 40°F

Air Quality

EPA Index 1 • Good

Air quality is satisfactory, and air pollution poses little or no risk.

PM2.5
1.9 μg/m³
Good
PM10
2 μg/m³
Good
Ozone (O3)
70 μg/m³
Photochemical
NO2
4.2 μg/m³
Nitrogen Dioxide
SO2
0.5 μg/m³
Sulfur Dioxide
CO
146 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 28m daylight
Sunrise 7:08 AM
Solar Noon 11:52 AM
Sunset 4:36 PM
Moon
Waxing Crescent • 13%
Moonrise 11:33 AM
Transit 3:30 PM
Moonset 7:33 PM

Best Times for Fishing or Hunting

Major Periods

2:35 AM - 5:05 AM
3:00 PM - 5:30 PM

Minor Periods

11:03 AM - 12:33 PM
7:03 PM - 8:33 PM
Action Rating:
Fair Action 2/5
Friday, November 13, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 30.9°F
Average Humidity: 71%
Chance of Rain: 0%
Wind: 8.2 mph
UV Index: 2.3

Air Quality

EPA Index 1 • Good
PM2.5
1.7 μg/m³
Good
PM10
1.9 μg/m³
Good
Ozone (O3)
72.8 μg/m³
Photochemical
NO2
2.5 μg/m³
Nitrogen Dioxide
SO2
0.5 μg/m³
Sulfur Dioxide
CO
123.2 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 28m daylight
Sunrise 7:08 AM
Solar Noon 11:52 AM
Sunset 4:36 PM
Moon
Waxing Crescent • 13%
Moonrise 11:33 AM
Transit 3:30 PM
Moonset 7:33 PM

Best Times for Fishing or Hunting

Major Periods

2:35 AM - 5:05 AM
3:00 PM - 5:30 PM

Minor Periods

11:03 AM - 12:33 PM
7:03 PM - 8:33 PM
Action Rating:
Fair Action 2/5
Saturday, November 14, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 32.4°F
Average Humidity: 70%
Chance of Rain: 0%
Wind: 5.7 mph
UV Index: 2.3

Air Quality

EPA Index 1 • Good
PM2.5
5.3 μg/m³
Good
PM10
5.6 μg/m³
Good
Ozone (O3)
62.6 μg/m³
Photochemical
NO2
8 μg/m³
Nitrogen Dioxide
SO2
2 μg/m³
Sulfur Dioxide
CO
173.3 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 25m daylight
Sunrise 7:09 AM
Solar Noon 11:52 AM
Sunset 4:35 PM
Moon
Waxing Crescent • 21%
Moonrise 12:08 PM
Transit 4:19 PM
Moonset 8:38 PM

Best Times for Fishing or Hunting

Major Periods

3:25 AM - 5:55 AM
3:49 PM - 6:19 PM

Minor Periods

11:38 AM - 1:08 PM
8:08 PM - 9:38 PM
Action Rating:
Fair Action 2/5
Sunday, November 15, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 36.3°F
Average Humidity: 74%
Chance of Rain: 0%
Wind: 8 mph
UV Index: 2.2

Air Quality

EPA Index 1 • Good
PM2.5
5.9 μg/m³
Good
PM10
6.1 μg/m³
Good
Ozone (O3)
52.2 μg/m³
Photochemical
NO2
7 μg/m³
Nitrogen Dioxide
SO2
1.1 μg/m³
Sulfur Dioxide
CO
181.1 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 23m daylight
Sunrise 7:11 AM
Solar Noon 11:52 AM
Sunset 4:34 PM
Moon
Waxing Crescent • 31%
Moonrise 12:35 PM
Transit 5:05 PM
Moonset 9:45 PM

Best Times for Fishing or Hunting

Major Periods

4:13 AM - 6:43 AM
4:35 PM - 7:05 PM

Minor Periods

12:05 PM - 1:35 PM
9:15 PM - 10:45 PM
Action Rating:
Very Good 4/5
Monday, November 16, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 40.5°F
Average Humidity: 66%
Chance of Rain: 0%
Wind: 11 mph
UV Index: 1.8

Air Quality

EPA Index 1 • Good
PM2.5
7 μg/m³
Good
PM10
7.1 μg/m³
Good
Ozone (O3)
47.9 μg/m³
Photochemical
NO2
7.9 μg/m³
Nitrogen Dioxide
SO2
1.2 μg/m³
Sulfur Dioxide
CO
170.5 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 20m daylight
Sunrise 7:12 AM
Solar Noon 11:52 AM
Sunset 4:33 PM
Moon
First Quarter • 42%
Moonrise 12:57 PM
Transit 5:50 PM
Moonset 10:54 PM

Best Times for Fishing or Hunting

Major Periods

4:58 AM - 7:28 AM
5:20 PM - 7:50 PM

Minor Periods

12:27 PM - 1:57 PM
10:24 PM - 11:54 PM
Action Rating:
Good Action 3/5
Tuesday, November 17, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 45.3°F
Average Humidity: 78%
Chance of Rain: 1%
Wind: 10.1 mph
UV Index: 2.1

Air Quality

EPA Index 1 • Good
PM2.5
5.6 μg/m³
Good
PM10
5.7 μg/m³
Good
Ozone (O3)
53.9 μg/m³
Photochemical
NO2
6.6 μg/m³
Nitrogen Dioxide
SO2
1.1 μg/m³
Sulfur Dioxide
CO
161.4 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 18m daylight
Sunrise 7:14 AM
Solar Noon 11:52 AM
Sunset 4:32 PM
Moon
First Quarter • 54%
Moonrise 1:15 PM
Transit 6:33 PM
Moonset 12:03 AM

Best Times for Fishing or Hunting

Major Periods

5:41 AM - 8:11 AM
6:03 PM - 8:33 PM

Minor Periods

12:45 PM - 2:15 PM
11:33 PM - 1:03 AM
Action Rating:
Fair Action 2/5
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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