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

32.7°F
Mist
Mist
30.6°F
34°F
100%
NW 2.7 mph
4.6 mph
33°F
33.7°F
0 in
100%
0 mi
1008 mbar
1

Five Day Weather Forecast

Light freezing rain
Fri
H: 34°F
L: 29°F
Patchy rain nearby
Sat
H: 44°F
L: 27°F
Partly Cloudy
Sun
H: 48°F
L: 32°F
Partly Cloudy
Mon
H: 40°F
L: 27°F
Moderate snow
Tue
H: 26°F
L: 23°F

Air Quality

AQI: 1 - Good
PM2.5: 1.45 μg/m3
PM10: 1.45 μg/m3
Carbon Monoxide: 179.85 μg/m3
Nitrogen Dioxide: 3.35 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 67 μg/m3

Astronomical

Sunrise: 6:38 AM
Sun Transit: 12:19 AM
Sunset: 6:01 PM
Daylight: 11 hrs 23 mins
Moonrise: 10:03 PM
Moon Transit: 2:19 AM
Moonset: 7:34 AM
Moon Phase: Waning Gibbous
Moon Illumination: 87.6%

Best Times for Fishing or Hunting

Major Periods

1:49 AM - 4:19 AM
1:54 PM - 4:24 PM

Minor Periods

9:33 PM - 11:03 PM
7:04 AM - 8:34 AM

Action Rating: 3 out of 5

Winter Weather Advisory issued March 6 at 11:31AM CST until March 6 at 1:00PM CST by NWS Duluth MN

Effective: Fri March 6, 2026, 11:31 AM
Expires: Fri March 6, 2026, 11:45 PM

* WHAT...For the first Winter Weather Advisory, freezing drizzle. For the second Winter Weather Advisory, mixed precipitation expected. Total snow accumulations up to one inch and ice accumulations up to 0.10". * WHERE...Carlton and South St. Louis, Southern Cook and Southern Lake Counties. This includes the Tribal Lands of the Fond du Lac Band and the Grand Portage Reservation. * WHEN...For the first Winter Weather Advisory, until 1 PM CST this afternoon. For the second Winter Weather Advisory, from 4 PM this afternoon to 3 AM CST Saturday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Plan on slippery road conditions. The hazardous conditions could impact the Friday evening commute. Roads, and especially bridges and overpasses, will likely become slick and hazardous. * ADDITIONAL DETAILS...For this evening, temperatures will fall below freezing in the west first and transition to below freezing eastward through the evening.

Slow down and use caution while traveling. Call 511 or visit www.511mn.org for Minnesota road information.


Winter Weather Advisory issued March 6 at 11:31AM CST until March 7 at 3:00AM CST by NWS Duluth MN

Effective: Fri March 6, 2026, 11:31 AM
Expires: Fri March 6, 2026, 11:45 PM

* WHAT...For the first Winter Weather Advisory, freezing drizzle. For the second Winter Weather Advisory, mixed precipitation expected. Total snow accumulations up to one inch and ice accumulations up to 0.10". * WHERE...Carlton and South St. Louis, Southern Cook and Southern Lake Counties. This includes the Tribal Lands of the Fond du Lac Band and the Grand Portage Reservation. * WHEN...For the first Winter Weather Advisory, until 1 PM CST this afternoon. For the second Winter Weather Advisory, from 4 PM this afternoon to 3 AM CST Saturday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Plan on slippery road conditions. The hazardous conditions could impact the Friday evening commute. Roads, and especially bridges and overpasses, will likely become slick and hazardous. * ADDITIONAL DETAILS...For this evening, temperatures will fall below freezing in the west first and transition to below freezing eastward through the evening.

Slow down and use caution while traveling. Call 511 or visit www.511mn.org for Minnesota road information.


Dense Fog Advisory issued March 6 at 11:10AM CST until March 6 at 9:00PM CST by NWS Duluth MN

Effective: Fri March 6, 2026, 11:10 AM
Expires: Fri March 6, 2026, 9:00 PM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Carlton and South St. Louis, Southern Cook and Southern Lake Counties. This includes the Tribal Lands of the Fond du Lac Band and the Grand Portage Reservation. * WHEN...Until 9 PM CST this evening. * IMPACTS...Low visibility could make driving conditions hazardous. In areas where temperatures are near or below freezing, the fog could result in icy roads, sidewalks, and other surfaces. * ADDITIONAL DETAILS...Temperatures will rise above freezing after 1 PM this afternoon ending the freezing fog threat.

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


Winter Weather Advisory issued March 6 at 1:08PM CST until March 7 at 3:00AM CST by NWS Duluth MN

Effective: Fri March 6, 2026, 1:08 PM
Expires: Sat March 7, 2026, 1:15 AM

* WHAT...Mixed precipitation expected. Total snow accumulations up to one inch and ice accumulations around a light glaze. * WHERE...Carlton and South St. Louis, Southern Cook and Southern Lake Counties. This includes the Tribal Lands of the Fond du Lac Band and the Grand Portage Reservation. * WHEN...Until 3 AM CST Saturday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Plan on slippery road conditions. The hazardous conditions could impact the Friday evening commute. * ADDITIONAL DETAILS...For this evening, temperatures will fall below freezing in the west first and transition to below freezing eastward through the evening.

Slow down and use caution while traveling. Call 511 or visit www.511mn.org for Minnesota road information.


Friday, March 6, 2026

Weather Forecast

Light freezing rain
34°F
28.9°F
32.5°F
98%
0.11 in
82%
39%
8.7 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 6.49 μg/m3
PM10: 6.76 μg/m3
Carbon Monoxide: 246.81 μg/m3
Nitrogen Dioxide: 5.34 μg/m3
Sulphur Dioxide: 1.54 μg/m3
Ozone: 62.72 μg/m3

Astronomical

Sunrise: 6:38 AM
Sun Transit: 12:19 AM
Sunset: 6:01 PM
Daylight: 11 hrs 23 mins
Moonrise: 10:03 PM
Moon Transit: 2:19 AM
Moonset: 7:34 AM
Moon Phase: Waning Gibbous
Moon Illumination: 87.6%

Best Times for Fishing or Hunting

Major Periods

1:49 AM - 4:19 AM
1:54 PM - 4:24 PM

Minor Periods

9:33 PM - 11:03 PM
7:04 AM - 8:34 AM

Action Rating: 3 out of 5

Saturday, March 7, 2026

Weather Forecast

Patchy rain nearby
43.7°F
26.6°F
34.8°F
81%
0.14 in
78%
11%
13.4 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 2.85 μg/m3
PM10: 2.93 μg/m3
Carbon Monoxide: 205.93 μg/m3
Nitrogen Dioxide: 4.59 μg/m3
Sulphur Dioxide: 1.95 μg/m3
Ozone: 72.84 μg/m3

Astronomical

Sunrise: 6:36 AM
Sun Transit: 12:18 AM
Sunset: 6:02 PM
Daylight: 11 hrs 26 mins
Moonrise: 11:12 PM
Moon Transit: 3:02 AM
Moonset: 7:53 AM
Moon Phase: Waning Gibbous
Moon Illumination: 79.2%

Best Times for Fishing or Hunting

Major Periods

2:32 AM - 5:02 AM
2:38 PM - 5:08 PM

Minor Periods

12:00 AM - 12:00 AM
7:23 AM - 8:53 AM

Action Rating: 2 out of 5

Sunday, March 8, 2026

Weather Forecast

Partly Cloudy
47.7°F
31.6°F
40.1°F
83%
0 in
0%
0%
17.9 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 2.83 μg/m3
PM10: 3.29 μg/m3
Carbon Monoxide: 173.13 μg/m3
Nitrogen Dioxide: 3.53 μg/m3
Sulphur Dioxide: 2.03 μg/m3
Ozone: 78.72 μg/m3

Astronomical

Sunrise: 6:34 AM
Sun Transit: 12:18 AM
Sunset: 6:04 PM
Daylight: 11 hrs 29 mins
Moonrise: 12:12 AM
Moon Transit: 3:47 AM
Moonset: 8:15 AM
Moon Phase: Waning Gibbous
Moon Illumination: 69.3%

Best Times for Fishing or Hunting

Major Periods

3:17 AM - 5:47 AM
3:24 PM - 5:54 PM

Minor Periods

7:45 AM - 9:15 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Monday, March 9, 2026

Weather Forecast

Partly Cloudy
40.3°F
26.8°F
37.5°F
72%
0 in
0%
0%
16.8 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 3.1 μg/m3
PM10: 3.79 μg/m3
Carbon Monoxide: 170.2 μg/m3
Nitrogen Dioxide: 2.97 μg/m3
Sulphur Dioxide: 1.79 μg/m3
Ozone: 87.08 μg/m3

Astronomical

Sunrise: 6:32 AM
Sun Transit: 12:00 AM
Sunset: 6:05 PM
Daylight: 11 hrs 33 mins
Moonrise: 12:22 AM
Moon Transit: 4:35 AM
Moonset: 8:42 AM
Moon Phase: Waning Gibbous
Moon Illumination: 58.5%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

8:12 AM - 9:42 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, March 10, 2026

Weather Forecast

Moderate snow
25.6°F
22.5°F
24.3°F
79%
0.41 in
72%
50%
17.9 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 1.97 μg/m3
PM10: 2.26 μg/m3
Carbon Monoxide: 182.39 μg/m3
Nitrogen Dioxide: 2.58 μg/m3
Sulphur Dioxide: 1.73 μg/m3
Ozone: 82.5 μg/m3

Astronomical

Sunrise: 6:31 AM
Sun Transit: 12:00 AM
Sunset: 6:07 PM
Daylight: 11 hrs 36 mins
Moonrise: 1:28 AM
Moon Transit: 5:24 AM
Moonset: 9:17 AM
Moon Phase: Last Quarter
Moon Illumination: 47.2%

Best Times for Fishing or Hunting

Major Periods

4:54 AM - 7:24 AM
5:03 PM - 7:33 PM

Minor Periods

8:47 AM - 10:17 AM
12:58 AM - 2:28 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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