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

37.6°F
Mist
Mist
29.4°F
48.6°F
100%
WNW 13 mph
26.6 mph
45.1°F
44.8°F
0 in
75%
0 mi
999 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Sun
H: 51°F
L: 37°F
Patchy rain nearby
Mon
H: 51°F
L: 35°F
Fog
Tue
H: 39°F
L: 34°F
Mist
Wed
H: 42°F
L: 34°F
Cloudy
Thu
H: 48°F
L: 33°F

Air Quality

AQI: 1 - Good
PM2.5: 5.35 μg/m3
PM10: 6.05 μg/m3
Carbon Monoxide: 173.85 μg/m3
Nitrogen Dioxide: 5.15 μg/m3
Sulphur Dioxide: 2.05 μg/m3
Ozone: 62 μg/m3

Astronomical

Sunrise: 6:26 AM
Sun Transit: 1:08 PM
Sunset: 7:52 PM
Daylight: 13 hrs 26 mins
Moonrise: 4:26 AM
Moon Transit: 9:16 AM
Moonset: 2:17 PM
Moon Phase: Waning Crescent
Moon Illumination: 12.6%

Best Times for Fishing or Hunting

Major Periods

8:46 AM - 11:16 AM
8:53 PM - 11:23 PM

Minor Periods

1:47 PM - 3:17 PM
3:56 AM - 5:26 AM

Action Rating: 2 out of 5

Flood Watch issued April 12 at 3:16AM CDT until April 15 at 7:00AM CDT by NWS Duluth MN

Effective: Sun April 12, 2026, 3:16 AM
Expires: Mon April 13, 2026, 3:30 AM

Heavy rain on top of the existing snowpack may increase the rate of snowmelt. The resultant runoff may cause water levels in area rivers to increase and flooding is possible. * WHAT...Flooding caused by rain and snowmelt continues to be possible. * WHERE...In Wisconsin, Ashland, Bayfield and Iron Counties. This includes the Tribal Lands of the Red Cliff Band, the northwestern county of the Lac du Flambeau Band and the Bad River Reservation. Other locations including the Apostle Islands National Lakeshore and Madeline Island. * WHEN...Through Wednesday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Around 1 to 3 inches of rain is expected to fall over several inches of lingering snowpack along the South Shore of Lake Superior. Areas of minor flooding are possible in the Bayfield Peninsula and east over northern Ashland and Iron counties. - Flood safety information can be found at www.weather.gov/safety/flood.

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.


Flood Watch issued April 12 at 3:35PM CDT until April 15 at 7:00AM CDT by NWS Duluth MN

Effective: Sun April 12, 2026, 3:35 PM
Expires: Mon April 13, 2026, 7:00 AM

Heavy rain on top of the existing snowpack may increase the rate of snowmelt. The resultant runoff may cause water levels in area rivers to increase and flooding is possible. * WHAT...Flooding caused by rain and snowmelt continues to be possible. * WHERE...In Wisconsin, Ashland, Bayfield and Iron Counties. This includes the Tribal Lands of the Bad River Reservation, the northwestern county of the Lac du Flambeau Band and the Red Cliff Band. Other locations including Madeline Island and the Apostle Islands National Lakeshore. * WHEN...Through Wednesday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Around 1 to 3 inches of rain is expected to fall over several inches of lingering snowpack along the South Shore of Lake Superior. Areas of minor flooding are possible in the Bayfield Peninsula and east over northern Ashland and Iron counties. - Flood safety information can be found at www.weather.gov/safety/flood.

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.


Sunday, April 12, 2026

Weather Forecast

Patchy rain nearby
50.7°F
37.2°F
43.3°F
97%
0.1 in
88%
0%
13 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 5.51 μg/m3
PM10: 6.2 μg/m3
Carbon Monoxide: 192.17 μg/m3
Nitrogen Dioxide: 4.16 μg/m3
Sulphur Dioxide: 1.58 μg/m3
Ozone: 83 μg/m3

Astronomical

Sunrise: 6:26 AM
Sun Transit: 1:08 PM
Sunset: 7:52 PM
Daylight: 13 hrs 26 mins
Moonrise: 4:26 AM
Moon Transit: 9:16 AM
Moonset: 2:17 PM
Moon Phase: Waning Crescent
Moon Illumination: 12.6%

Best Times for Fishing or Hunting

Major Periods

8:46 AM - 11:16 AM
8:53 PM - 11:23 PM

Minor Periods

1:47 PM - 3:17 PM
3:56 AM - 5:26 AM

Action Rating: 2 out of 5

Monday, April 13, 2026

Weather Forecast

Patchy rain nearby
50.5°F
34.7°F
43.8°F
93%
0.12 in
72%
0%
15.7 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 6.2 μg/m3
PM10: 7.43 μg/m3
Carbon Monoxide: 188.41 μg/m3
Nitrogen Dioxide: 5.3 μg/m3
Sulphur Dioxide: 1.87 μg/m3
Ozone: 71.12 μg/m3

Astronomical

Sunrise: 6:24 AM
Sun Transit: 1:08 PM
Sunset: 7:54 PM
Daylight: 13 hrs 30 mins
Moonrise: 4:46 AM
Moon Transit: 10:02 AM
Moonset: 3:31 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:32 AM - 12:02 AM

Minor Periods

3:01 PM - 4:31 PM
4:16 AM - 5:46 AM

Action Rating: 2 out of 5

Tuesday, April 14, 2026

Weather Forecast

Fog
39.4°F
34.2°F
36.1°F
98%
0 in
0%
0%
12.3 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 4.11 μg/m3
PM10: 5.59 μg/m3
Carbon Monoxide: 159.45 μg/m3
Nitrogen Dioxide: 3 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 88.36 μg/m3

Astronomical

Sunrise: 6:22 AM
Sun Transit: 1:08 PM
Sunset: 7:55 PM
Daylight: 13 hrs 33 mins
Moonrise: 5:03 AM
Moon Transit: 10:47 AM
Moonset: 4:47 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:17 AM - 12:47 AM

Minor Periods

4:17 PM - 5:47 PM
4:33 AM - 6:03 AM

Action Rating: 3 out of 5

Wednesday, April 15, 2026

Weather Forecast

Mist
41.7°F
34.3°F
37.8°F
97%
0 in
0%
0%
13.9 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 2.92 μg/m3
PM10: 3.87 μg/m3
Carbon Monoxide: 160.78 μg/m3
Nitrogen Dioxide: 2.49 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 83.56 μg/m3

Astronomical

Sunrise: 6:20 AM
Sun Transit: 1:07 PM
Sunset: 7:56 PM
Daylight: 13 hrs 36 mins
Moonrise: 5:20 AM
Moon Transit: 10:33 AM
Moonset: 6:05 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

10:03 AM - 12:33 AM
10:03 AM - 12:33 AM

Minor Periods

5:35 PM - 7:05 PM
4:50 AM - 6:20 AM

Action Rating: 3 out of 5

Thursday, April 16, 2026

Weather Forecast

Cloudy
48.3°F
33.3°F
39.1°F
90%
0 in
0%
0%
10.3 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 2.8 μg/m3
PM10: 3.13 μg/m3
Carbon Monoxide: 174.67 μg/m3
Nitrogen Dioxide: 3.57 μg/m3
Sulphur Dioxide: 1.43 μg/m3
Ozone: 76.08 μg/m3

Astronomical

Sunrise: 6:18 AM
Sun Transit: 1:07 PM
Sunset: 7:58 PM
Daylight: 13 hrs 39 mins
Moonrise: 5:38 AM
Moon Transit: 12:23 AM
Moonset: 7:25 PM
Moon Phase: New
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:53 AM - 2:23 PM

Minor Periods

6:55 PM - 8:25 PM
5:08 AM - 6:38 AM

Action Rating: 5 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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