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

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

35.6°F
Partly cloudy
Partly cloudy
31.7°F
31.5°F
29%
N 4.5 mph
9.3 mph
24.6°F
10.6°F
0 in
50%
9 mi
1025 mbar
0

Five Day Weather Forecast

Sunny
Sun
H: 42°F
L: 25°F
Sunny
Mon
H: 54°F
L: 27°F
Sunny
Tue
H: 59°F
L: 34°F
Patchy rain nearby
Wed
H: 51°F
L: 34°F
Patchy rain nearby
Thu
H: 48°F
L: 39°F

Air Quality

AQI: 1 - Good
PM2.5: 8.85 μg/m3
PM10: 10.65 μg/m3
Carbon Monoxide: 197.85 μg/m3
Nitrogen Dioxide: 7.25 μg/m3
Sulphur Dioxide: 3.45 μg/m3
Ozone: 69 μg/m3

Astronomical

Sunrise: 6:13 AM
Sun Transit: 1:06 PM
Sunset: 8:02 PM
Daylight: 13 hrs 49 mins
Moonrise: 6:57 AM
Moon Transit: 3:13 PM
Moonset: 11:43 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.9%

Best Times for Fishing or Hunting

Major Periods

1:55 AM - 4:25 AM
2:43 PM - 5:13 PM

Minor Periods

12:00 AM - 12:00 AM
6:27 AM - 7:57 AM

Action Rating: 3 out of 5

Fire Weather Watch issued April 19 at 2:10PM CDT until April 20 at 8:00PM CDT by NWS Duluth MN

Effective: Sun April 19, 2026, 2:10 PM
Expires: Mon April 20, 2026, 6:00 AM

The National Weather Service in Duluth has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Monday morning through Monday evening. * AFFECTED AREA...In Minnesota, Koochiching, North St. Louis, North Itasca, Central St. Louis, North Cass, South Itasca, South Cass, Crow Wing, Northern Aitkin, South Aitkin, Carlton and South St. Louis and Pine. * WINDS...Southwest 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 22 percent. * IMPACTS...Any fires that ignite could spread rapidly and become difficult to control. Outdoor burning is not recommended.

A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.
Sunday, April 19, 2026

Weather Forecast

Sunny
42.1°F
24.6°F
33.5°F
42%
0 in
0%
0%
11.6 mph
4.5


Air Quality

AQI: 1 - Good
PM2.5: 4.58 μg/m3
PM10: 5.72 μg/m3
Carbon Monoxide: 177.77 μg/m3
Nitrogen Dioxide: 1.85 μg/m3
Sulphur Dioxide: 1.71 μg/m3
Ozone: 93.08 μg/m3

Astronomical

Sunrise: 6:13 AM
Sun Transit: 1:06 PM
Sunset: 8:02 PM
Daylight: 13 hrs 49 mins
Moonrise: 6:57 AM
Moon Transit: 3:13 PM
Moonset: 11:43 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.9%

Best Times for Fishing or Hunting

Major Periods

1:55 AM - 4:25 AM
2:43 PM - 5:13 PM

Minor Periods

12:00 AM - 12:00 AM
6:27 AM - 7:57 AM

Action Rating: 3 out of 5

Monday, April 20, 2026

Weather Forecast

Sunny
53.7°F
27°F
39.6°F
44%
0 in
0%
0%
15 mph
4.8


Air Quality

AQI: 1 - Good
PM2.5: 8.45 μg/m3
PM10: 9.88 μg/m3
Carbon Monoxide: 197.93 μg/m3
Nitrogen Dioxide: 4.27 μg/m3
Sulphur Dioxide: 2.58 μg/m3
Ozone: 86.2 μg/m3

Astronomical

Sunrise: 6:11 AM
Sun Transit: 1:06 PM
Sunset: 8:03 PM
Daylight: 13 hrs 52 mins
Moonrise: 7:42 AM
Moon Transit: 4:17 PM
Moonset: 12:43 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%

Best Times for Fishing or Hunting

Major Periods

2:58 AM - 5:28 AM
3:47 PM - 6:17 PM

Minor Periods

7:12 AM - 8:42 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Tuesday, April 21, 2026

Weather Forecast

Sunny
58.5°F
33.7°F
45.1°F
64%
0 in
0%
0%
8.1 mph
6.1


Air Quality

AQI: 1 - Good
PM2.5: 9.14 μg/m3
PM10: 10.18 μg/m3
Carbon Monoxide: 221.89 μg/m3
Nitrogen Dioxide: 5.48 μg/m3
Sulphur Dioxide: 2.29 μg/m3
Ozone: 92.24 μg/m3

Astronomical

Sunrise: 6:09 AM
Sun Transit: 1:06 PM
Sunset: 8:05 PM
Daylight: 13 hrs 55 mins
Moonrise: 8:42 AM
Moon Transit: 5:22 PM
Moonset: 12:58 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.8%

Best Times for Fishing or Hunting

Major Periods

4:03 AM - 6:33 AM
4:52 PM - 7:22 PM

Minor Periods

8:12 AM - 9:42 AM
12:28 AM - 1:58 AM

Action Rating: 3 out of 5

Wednesday, April 22, 2026

Weather Forecast

Patchy rain nearby
51.1°F
34.3°F
42.7°F
71%
0.05 in
75%
0%
11.4 mph
5.7


Air Quality

AQI: 1 - Good
PM2.5: 10.1 μg/m3
PM10: 11.14 μg/m3
Carbon Monoxide: 172.39 μg/m3
Nitrogen Dioxide: 7.87 μg/m3
Sulphur Dioxide: 1.85 μg/m3
Ozone: 90.96 μg/m3

Astronomical

Sunrise: 6:08 AM
Sun Transit: 1:06 PM
Sunset: 8:06 PM
Daylight: 13 hrs 59 mins
Moonrise: 9:54 AM
Moon Transit: 6:24 PM
Moonset: 1:58 AM
Moon Phase: Waxing Crescent
Moon Illumination: 28.4%

Best Times for Fishing or Hunting

Major Periods

5:07 AM - 7:37 AM
5:54 PM - 8:24 PM

Minor Periods

9:24 AM - 10:54 AM
1:28 AM - 2:58 AM

Action Rating: 3 out of 5

Thursday, April 23, 2026

Weather Forecast

Patchy rain nearby
48.2°F
38.8°F
43.6°F
98%
0.19 in
84%
0%
9.6 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 8.46 μg/m3
PM10: 9.28 μg/m3
Carbon Monoxide: 183.97 μg/m3
Nitrogen Dioxide: 4.13 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 91.38 μg/m3

Astronomical

Sunrise: 6:06 AM
Sun Transit: 1:06 PM
Sunset: 8:08 PM
Daylight: 14 hrs 2 mins
Moonrise: 11:13 AM
Moon Transit: 7:22 PM
Moonset: 2:43 AM
Moon Phase: First Quarter
Moon Illumination: 39.1%

Best Times for Fishing or Hunting

Major Periods

6:07 AM - 8:37 AM
6:52 PM - 9:22 PM

Minor Periods

10:43 AM - 12:13 AM
2:13 AM - 3:43 AM

Action Rating: 3 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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