Water Temperature of Lake Superior in Superior, WI

Current Water Temperature

53.7°F

Measurement Time: Sunday, May 3, 2026, 7:15 PM CDT

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

44.6°F
Clear
Clear
41.5°F
48.3°F
76%
ENE 5.6 mph
11.7 mph
47.4°F
40.8°F
0 in
25%
9 mi
1017 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Thu
H: 57°F
L: 45°F
Patchy rain nearby
Fri
H: 72°F
L: 53°F
Sunny
Sat
H: 62°F
L: 42°F
Moderate rain
Sun
H: 49°F
L: 38°F
Heavy rain
Mon
H: 62°F
L: 41°F

Air Quality

AQI: 1 - Good
PM2.5: 9.65 μg/m3
PM10: 11.75 μg/m3
Carbon Monoxide: 150.85 μg/m3
Nitrogen Dioxide: 4.05 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 66 μg/m3

Astronomical

Sunrise: 5:35 AM
Sun Transit: 1:04 PM
Sunset: 8:35 PM
Daylight: 15 hrs 1 mins
Moonrise: 4:00 AM
Moon Transit: 11:00 AM
Moonset: 6:19 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:30 AM - 1:00 PM

Minor Periods

5:49 PM - 7:19 PM
3:30 AM - 5:00 AM

Action Rating: 2 out of 5

Fire Weather Watch issued May 13 at 12:57PM CDT until May 15 at 9:00PM CDT by NWS Duluth MN

Effective: Wed May 13, 2026, 12:57 PM
Expires: Thu May 14, 2026, 7:30 AM

The National Weather Service in Duluth has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Friday afternoon through Friday evening. * AFFECTED AREA...In Wisconsin, Douglas, Bayfield, Ashland, Iron, Burnett, Washburn and Sawyer. * WINDS...Southwest 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 18 percent. * IMPACTS...Any fires that develop will spread rapidly. 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.


Fire Weather Watch issued May 13 at 12:57PM CDT until May 15 at 9:00PM CDT by NWS Duluth MN

Effective: Wed May 13, 2026, 12:57 PM
Expires: Thu May 14, 2026, 7:30 AM

* AFFECTED AREA...In Minnesota, Koochiching, 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...West 15 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 20 percent. * IMPACTS...Any fires that develop will spread rapidly. 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.


Frost Advisory issued May 13 at 11:31AM CDT until May 14 at 7:00AM CDT by NWS Duluth MN

Effective: Wed May 13, 2026, 11:31 AM
Expires: Thu May 14, 2026, 7:00 AM

* WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...In Minnesota, Cook and Lake Counties. In Wisconsin, Price, Ashland, Bayfield, Iron, and Sawyer Counties. This includes the Tribal Lands of the northwestern area of the Lac du Flambeau Band, the Grand Portage Reservation, the Red Cliff Band, the Bad River Reservation and the Lac Courte Oreilles Reservation. Other locations including the Apostle Islands National Lakeshore and Madeline Island. This also includes the Boundary Waters eastern and central area. * WHEN...From 1 AM to 7 AM CDT Thursday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.
Thursday, May 14, 2026

Weather Forecast

Patchy rain nearby
56.5°F
45°F
48.3°F
82%
0.07 in
83%
0%
11.4 mph
6.2


Air Quality

AQI: 1 - Good
PM2.5: 8.97 μg/m3
PM10: 10.53 μg/m3
Carbon Monoxide: 173.25 μg/m3
Nitrogen Dioxide: 4.85 μg/m3
Sulphur Dioxide: 1.21 μg/m3
Ozone: 77.28 μg/m3

Astronomical

Sunrise: 5:35 AM
Sun Transit: 1:04 PM
Sunset: 8:35 PM
Daylight: 15 hrs 1 mins
Moonrise: 4:00 AM
Moon Transit: 11:00 AM
Moonset: 6:19 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:30 AM - 1:00 PM

Minor Periods

5:49 PM - 7:19 PM
3:30 AM - 5:00 AM

Action Rating: 2 out of 5

Friday, May 15, 2026

Weather Forecast

Patchy rain nearby
72.2°F
53.3°F
61.7°F
63%
0.02 in
77%
0%
17.7 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 5.23 μg/m3
PM10: 5.79 μg/m3
Carbon Monoxide: 142.65 μg/m3
Nitrogen Dioxide: 3.55 μg/m3
Sulphur Dioxide: 1.41 μg/m3
Ozone: 89.2 μg/m3

Astronomical

Sunrise: 5:33 AM
Sun Transit: 1:04 PM
Sunset: 8:37 PM
Daylight: 15 hrs 3 mins
Moonrise: 4:23 AM
Moon Transit: 11:54 AM
Moonset: 7:45 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:24 AM - 1:54 PM

Minor Periods

7:15 PM - 8:45 PM
3:53 AM - 5:23 AM

Action Rating: 5 out of 5

Saturday, May 16, 2026

Weather Forecast

Sunny
61.7°F
42.3°F
54°F
62%
0 in
0%
0%
14.5 mph
4


Air Quality

AQI: 1 - Good
PM2.5: 3.75 μg/m3
PM10: 4.12 μg/m3
Carbon Monoxide: 138.32 μg/m3
Nitrogen Dioxide: 4.25 μg/m3
Sulphur Dioxide: 1.75 μg/m3
Ozone: 86.48 μg/m3

Astronomical

Sunrise: 5:32 AM
Sun Transit: 1:04 PM
Sunset: 8:38 PM
Daylight: 15 hrs 6 mins
Moonrise: 4:53 AM
Moon Transit: 12:54 AM
Moonset: 9:13 PM
Moon Phase: New
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:24 AM - 2:54 PM

Minor Periods

8:43 PM - 10:13 PM
4:23 AM - 5:53 AM

Action Rating: 5 out of 5

Sunday, May 17, 2026

Weather Forecast

Moderate rain
48.7°F
37.9°F
43°F
82%
0.25 in
68%
0%
22.6 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 2.12 μg/m3
PM10: 2.16 μg/m3
Carbon Monoxide: 138.36 μg/m3
Nitrogen Dioxide: 3.01 μg/m3
Sulphur Dioxide: 1.17 μg/m3
Ozone: 67.44 μg/m3

Astronomical

Sunrise: 5:31 AM
Sun Transit: 1:04 PM
Sunset: 8:39 PM
Daylight: 15 hrs 8 mins
Moonrise: 5:32 AM
Moon Transit: 1:58 PM
Moonset: 10:36 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:38 AM - 3:08 AM
1:28 PM - 3:58 PM

Minor Periods

10:06 PM - 11:36 PM
5:02 AM - 6:32 AM

Action Rating: 4 out of 5

Monday, May 18, 2026

Weather Forecast

Heavy rain
61.9°F
41.1°F
46.5°F
99%
3.04 in
89%
0%
21.9 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 2.22 μg/m3
PM10: 2.32 μg/m3
Carbon Monoxide: 140.77 μg/m3
Nitrogen Dioxide: 2.32 μg/m3
Sulphur Dioxide: 1.08 μg/m3
Ozone: 69.15 μg/m3

Astronomical

Sunrise: 5:30 AM
Sun Transit: 1:04 PM
Sunset: 8:40 PM
Daylight: 15 hrs 10 mins
Moonrise: 6:27 AM
Moon Transit: 3:05 PM
Moonset: 11:44 PM
Moon Phase: New
Moon Illumination: 2.6%

Best Times for Fishing or Hunting

Major Periods

1:44 AM - 4:14 AM
2:35 PM - 5:05 PM

Minor Periods

12:00 AM - 12:00 AM
5:57 AM - 7:27 AM

Action Rating: 4 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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