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

63°F
Sunny
Sunny
63°F
64.4°F
86%
WSW 4.3 mph
6.7 mph
64.4°F
61.9°F
0 in
0%
9 mi
1018 mbar
1.2

Five Day Weather Forecast

Sunny
Sat
H: 83°F
L: 63°F
Sunny
Sun
H: 87°F
L: 64°F
Sunny
Mon
H: 88°F
L: 68°F
Sunny
Tue
H: 91°F
L: 66°F
Sunny
Wed
H: 82°F
L: 60°F

Air Quality

AQI: 1 - Good
PM2.5: 3.3 μg/m3
PM10: 3.8 μg/m3
Carbon Monoxide: 141 μg/m3
Nitrogen Dioxide: 5.3 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 63 μg/m3

Astronomical

Sunrise: 5:26 AM
Sun Transit: 1:13 PM
Sunset: 9:01 PM
Daylight: 15 hrs 36 mins
Moonrise: 1:55 AM
Moon Transit: 10:21 AM
Moonset: 6:58 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:51 AM - 12:21 AM

Minor Periods

6:28 PM - 7:58 PM
1:25 AM - 2:55 AM

Action Rating: 2 out of 5

Heat Advisory issued July 11 at 1:06AM CDT until July 11 at 9:00PM CDT by NWS Duluth MN

Effective: Sat July 11, 2026, 1:06 AM
Expires: Sat July 11, 2026, 4:00 PM

* WHAT...For the Heat Advisory, heat index values up to 95 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 100 possible. * WHERE...Bayfield and Douglas Counties. This includes the Tribal Lands of the Red Cliff Band. Other locations including the Apostle Islands National Lakeshore. * WHEN...For the Heat Advisory, from 11 AM this morning to 9 PM CDT this evening. For the Extreme Heat Watch, from Sunday morning through Monday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Little to no relief from the heat is possible Sunday night as continued very warm heat indices in the 70s are forecast Sunday night.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.


Extreme Heat Watch issued July 11 at 1:06AM CDT until July 13 at 9:00PM CDT by NWS Duluth MN

Effective: Sat July 11, 2026, 1:06 AM
Expires: Sat July 11, 2026, 4:00 PM

* WHAT...For the Heat Advisory, heat index values up to 95 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 100 possible. * WHERE...Bayfield and Douglas Counties. This includes the Tribal Lands of the Red Cliff Band. Other locations including the Apostle Islands National Lakeshore. * WHEN...For the Heat Advisory, from 11 AM this morning to 9 PM CDT this evening. For the Extreme Heat Watch, from Sunday morning through Monday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Little to no relief from the heat is possible Sunday night as continued very warm heat indices in the 70s are forecast Sunday night.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Saturday, July 11, 2026

Weather Forecast

Sunny
83.1°F
63.4°F
69.8°F
84%
0.07 in
58%
0%
9.2 mph
8.3


Air Quality

AQI: 1 - Good
PM2.5: 4.64 μg/m3
PM10: 5.27 μg/m3
Carbon Monoxide: 139.92 μg/m3
Nitrogen Dioxide: 5.95 μg/m3
Sulphur Dioxide: 0.43 μg/m3
Ozone: 79.58 μg/m3

Astronomical

Sunrise: 5:26 AM
Sun Transit: 1:13 PM
Sunset: 9:01 PM
Daylight: 15 hrs 36 mins
Moonrise: 1:55 AM
Moon Transit: 10:21 AM
Moonset: 6:58 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:51 AM - 12:21 AM

Minor Periods

6:28 PM - 7:58 PM
1:25 AM - 2:55 AM

Action Rating: 2 out of 5

Sunday, July 12, 2026

Weather Forecast

Sunny
87.4°F
63.6°F
75.5°F
77%
0.02 in
37%
0%
13 mph
8.8


Air Quality

AQI: 1 - Good
PM2.5: 6.63 μg/m3
PM10: 7.36 μg/m3
Carbon Monoxide: 133.83 μg/m3
Nitrogen Dioxide: 4.08 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 100.21 μg/m3

Astronomical

Sunrise: 5:27 AM
Sun Transit: 1:14 PM
Sunset: 9:01 PM
Daylight: 15 hrs 34 mins
Moonrise: 2:49 AM
Moon Transit: 11:27 AM
Moonset: 8:07 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:57 AM - 1:27 PM

Minor Periods

7:37 PM - 9:07 PM
2:19 AM - 3:49 AM

Action Rating: 3 out of 5

Monday, July 13, 2026

Weather Forecast

Sunny
88.2°F
67.9°F
77.6°F
70%
0 in
5%
0%
13.6 mph
9.4


Air Quality

AQI: 1 - Good
PM2.5: 5.08 μg/m3
PM10: 5.48 μg/m3
Carbon Monoxide: 134.38 μg/m3
Nitrogen Dioxide: 3.7 μg/m3
Sulphur Dioxide: 1.03 μg/m3
Ozone: 104.33 μg/m3

Astronomical

Sunrise: 5:28 AM
Sun Transit: 1:14 PM
Sunset: 9:00 PM
Daylight: 15 hrs 32 mins
Moonrise: 3:59 AM
Moon Transit: 12:34 AM
Moonset: 9:00 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:04 AM - 2:34 PM

Minor Periods

8:30 PM - 10:00 PM
3:29 AM - 4:59 AM

Action Rating: 4 out of 5

Tuesday, July 14, 2026

Weather Forecast

Sunny
90.8°F
66.3°F
78.1°F
67%
0 in
4%
0%
11.9 mph
9.5


Air Quality

AQI: 1 - Good
PM2.5: 5.28 μg/m3
PM10: 5.44 μg/m3
Carbon Monoxide: 152.07 μg/m3
Nitrogen Dioxide: 3.71 μg/m3
Sulphur Dioxide: 0.93 μg/m3
Ozone: 108.33 μg/m3

Astronomical

Sunrise: 5:28 AM
Sun Transit: 1:14 PM
Sunset: 8:59 PM
Daylight: 15 hrs 31 mins
Moonrise: 5:21 AM
Moon Transit: 1:38 PM
Moonset: 9:38 PM
Moon Phase: New
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:19 AM - 2:49 AM
1:08 PM - 3:38 PM

Minor Periods

9:08 PM - 10:38 PM
4:51 AM - 6:21 AM

Action Rating: 4 out of 5

Wednesday, July 15, 2026

Weather Forecast

Sunny
82.3°F
60.1°F
67.9°F
72%
0 in
7%
0%
8.5 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 4.35 μg/m3
PM10: 4.41 μg/m3
Carbon Monoxide: 151.13 μg/m3
Nitrogen Dioxide: 4.9 μg/m3
Sulphur Dioxide: 0.73 μg/m3
Ozone: 63.63 μg/m3

Astronomical

Sunrise: 5:29 AM
Sun Transit: 1:14 PM
Sunset: 8:58 PM
Daylight: 15 hrs 29 mins
Moonrise: 6:49 AM
Moon Transit: 2:36 PM
Moonset: 10:07 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

1:21 AM - 3:51 AM
2:06 PM - 4:36 PM

Minor Periods

9:37 PM - 11:07 PM
6:19 AM - 7:49 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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