Water Temperature of Lake Superior in Superior, WI

Current Water Temperature

38.8°F

Measurement Time: Tuesday, November 25, 2025, 7:15 AM CST

Temperature Locations

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Local Points of Interest

Lake Superior Estuarium; Lake Superior National Estuarine Research Reserve (NERR); Barkers Island Beach; Duluth, MN

Lake Superior

Station Name: Superior
Data Source: USGS

Elevation Above Sea Level: 587 feet

Nearest Address:
182 Marina Dr
Superior, WI 54880
Douglas County

GPS Coordinates: 46.7217, -92.0635

Nearby Water Temperatures

Duluth Harbor, Duluth, MN (4 mi)
Lake Superior, Duluth, MN (10.9 mi)
Lake Superior, Duluth, MN (11.5 mi)
Lake Superior, Duluth, MN (12.8 mi)
St. Louis River, Scanlon, MN (16.9 mi)
Knife River, Knife River, MN (20.2 mi)
Bois Brule River, Maple, WI (21.9 mi)
Lake Superior, Two Harbors, MN (27.8 mi)
St. Croix River, Danbury, WI (45.5 mi)
Namekagon River, Cable, WI (51.6 mi)
Saint Louis River, Hoyt Lakes, MN (52.5 mi)
Chequamegon Bay, Ashland, WI (56.9 mi)
Baptism River, Illgen City, MN (58.9 mi)
Partrige River, Babbitt, MN (62.4 mi)
Dunka River, Babbitt, MN (66 mi)

Weather for Superior, Wisconsin

Current Weather

39.2°F
Partly cloudy
Partly cloudy
35.6°F
39.8°F
100%
ENE 4.9 mph
7.9 mph
35°F
38.6°F
0 in
75%
8 mi
1009 mbar
4.3

Five Day Weather Forecast

Fog
Wed
H: 42°F
L: 36°F
Partly Cloudy
Thu
H: 61°F
L: 34°F
Moderate rain
Fri
H: 50°F
L: 37°F
Light freezing rain
Sat
H: 38°F
L: 26°F
Partly Cloudy
Sun
H: 42°F
L: 25°F

Air Quality

AQI: 1 - Good
PM2.5: 3.15 μg/m3
PM10: 4.05 μg/m3
Carbon Monoxide: 162.85 μg/m3
Nitrogen Dioxide: 3.75 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 86 μg/m3

Astronomical

Sunrise: 6:21 AM
Sun Transit: 1:08 PM
Sunset: 7:57 PM
Daylight: 13 hrs 36 mins
Moonrise: 5:21 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
4:51 AM - 6:21 AM

Action Rating: 3 out of 5

Dense Fog Advisory issued April 14 at 10:07PM CDT until April 15 at 10:00AM CDT by NWS Duluth MN

Effective: Tue April 14, 2026, 10:07 PM
Expires: Wed April 15, 2026, 10:00 AM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Minnesota, Koochiching, Carlton, St. Louis, Cook and Lake Counties. In Wisconsin, Ashland, Bayfield, Douglas, and Iron Counties. This includes the Tribal Lands of the Bad River Reservation, the Grand Portage Reservation, the Fond du Lac Band, the northwestern area of the Lac du Flambeau Band, the Red Cliff Band and the Bois Forte Band, Lake Vermilion and, Nett Lake areas. Other locations including Madeline Island, Voyageurs National Park and the Apostle Islands National Lakeshore. The entire Boundary Waters is also included. * WHEN...Until 10 AM CDT Wednesday. * 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 April 15 at 1:03PM CDT until April 16 at 10:00AM CDT by NWS Duluth MN

Effective: Wed April 15, 2026, 1:03 PM
Expires: Thu April 16, 2026, 5:00 AM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Minnesota, Carlton and South St. Louis, Southern Cook and Southern Lake Counties. In Wisconsin, Ashland, Bayfield, Douglas, and Iron Counties. This includes the Tribal Lands of the Fond du Lac Band, the northwestern area of the Lac du Flambeau Band, the Grand Portage Reservation, the Bad River Reservation and the Red Cliff Band. Other locations including Madeline Island and the Apostle Islands National Lakeshore. * WHEN...From 10 PM this evening to 10 AM CDT Thursday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Fog will develop tonight around Lake Superior and will be dense overnight. Visibility will improve Thursday morning.

If driving, slow down, use your low-beam headlights and fog lights, and leave plenty of distance ahead of you.
Wednesday, April 15, 2026

Weather Forecast

Fog
41.7°F
36.1°F
39.1°F
97%
0 in
0%
0%
7.8 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 6.28 μg/m3
PM10: 7.24 μg/m3
Carbon Monoxide: 161.73 μg/m3
Nitrogen Dioxide: 5.64 μg/m3
Sulphur Dioxide: 1.91 μg/m3
Ozone: 69.72 μg/m3

Astronomical

Sunrise: 6:21 AM
Sun Transit: 1:08 PM
Sunset: 7:57 PM
Daylight: 13 hrs 36 mins
Moonrise: 5:21 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
4:51 AM - 6:21 AM

Action Rating: 3 out of 5

Thursday, April 16, 2026

Weather Forecast

Partly Cloudy
60.8°F
34.2°F
44.3°F
87%
0 in
0%
0%
10.5 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 4.63 μg/m3
PM10: 5.41 μg/m3
Carbon Monoxide: 162.69 μg/m3
Nitrogen Dioxide: 3.93 μg/m3
Sulphur Dioxide: 1.19 μg/m3
Ozone: 81.96 μg/m3

Astronomical

Sunrise: 6:19 AM
Sun Transit: 1:08 PM
Sunset: 7:58 PM
Daylight: 13 hrs 39 mins
Moonrise: 5:39 AM
Moon Transit: 12:23 AM
Moonset: 7:26 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

6:56 PM - 8:26 PM
5:09 AM - 6:39 AM

Action Rating: 5 out of 5

Friday, April 17, 2026

Weather Forecast

Moderate rain
49.8°F
36.7°F
41.4°F
88%
0.44 in
88%
0%
14.1 mph
0.7


Air Quality

AQI: 1 - Good
PM2.5: 5.27 μg/m3
PM10: 5.96 μg/m3
Carbon Monoxide: 159.77 μg/m3
Nitrogen Dioxide: 3.72 μg/m3
Sulphur Dioxide: 1.39 μg/m3
Ozone: 90.24 μg/m3

Astronomical

Sunrise: 6:17 AM
Sun Transit: 1:07 PM
Sunset: 7:59 PM
Daylight: 13 hrs 42 mins
Moonrise: 6:00 AM
Moon Transit: 1:15 PM
Moonset: 8:51 PM
Moon Phase: New
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

12:02 AM - 2:32 AM
12:45 AM - 3:15 PM

Minor Periods

8:21 PM - 9:51 PM
5:30 AM - 7:00 AM

Action Rating: 4 out of 5

Saturday, April 18, 2026

Weather Forecast

Light freezing rain
37.9°F
26.2°F
31.5°F
57%
0.01 in
85%
13%
19.9 mph
0.8


Air Quality

AQI: 1 - Good
PM2.5: 2 μg/m3
PM10: 2.13 μg/m3
Carbon Monoxide: 169.05 μg/m3
Nitrogen Dioxide: 2.5 μg/m3
Sulphur Dioxide: 1.31 μg/m3
Ozone: 82.32 μg/m3

Astronomical

Sunrise: 6:15 AM
Sun Transit: 1:07 PM
Sunset: 8:01 PM
Daylight: 13 hrs 45 mins
Moonrise: 6:25 AM
Moon Transit: 2:12 PM
Moonset: 10:18 PM
Moon Phase: New
Moon Illumination: 1.2%

Best Times for Fishing or Hunting

Major Periods

12:56 AM - 3:26 AM
1:42 PM - 4:12 PM

Minor Periods

9:48 PM - 11:18 PM
5:55 AM - 7:25 AM

Action Rating: 4 out of 5

Sunday, April 19, 2026

Weather Forecast

Partly Cloudy
41.6°F
24.5°F
32.3°F
52%
0 in
0%
7%
12.8 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 2.86 μg/m3
PM10: 3.37 μg/m3
Carbon Monoxide: 158.33 μg/m3
Nitrogen Dioxide: 1.66 μg/m3
Sulphur Dioxide: 1.29 μg/m3
Ozone: 99.85 μg/m3

Astronomical

Sunrise: 6:14 AM
Sun Transit: 1:07 PM
Sunset: 8:02 PM
Daylight: 13 hrs 49 mins
Moonrise: 6:58 AM
Moon Transit: 3:13 PM
Moonset: 11:42 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
6:28 AM - 7:58 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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