Water Temperature of Lake Superior Near Copper Harbor, MI

Current Water Temperature

40.1°F

Measurement Time: Tuesday, December 2, 2025, 1:20 PM EST

Temperature Locations

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Local Points of Interest

Quebec Harbour

Lake Superior

Station Name: EAST SUPERIOR -70 NM NE Marquette, MI
Station Type: Other
Data Source: National Data Buoy Center

Elevation Above Sea Level: 0 feet

Nearest Address:
Offshore
Copper Harbor, MI 49918
Keweenaw County

GPS Coordinates: 47.585, -86.585

Nearby Water Temperatures

Lake Superior, Isle Royale, MI (61.5 mi)
Lake Superior, Terrace Bay Township, ON (68.1 mi)
Miners River, Munising, MI (75.8 mi)
Lake Superior, Marquette, MI (80.9 mi)
East Branch Salmon Trout River, Powell, MI (81.2 mi)
Salmon Trout River, Champion, MI (82.2 mi)
Keweenaw Bay, Jacobsville, MI (95 mi)
Middle Branch Escanaba River, Humboldt, MI (96.6 mi)
Middle Branch Escanaba River, , MI (96.9 mi)
Lake Superior, Calumet, MI (97 mi)
Pilgrim River, Houghton, MI (98.3 mi)
Falls River, L'Anse, MI (105.2 mi)
Sturgeon River, Pelkie, MI (114.2 mi)
Seul Choix Bay, Port Inland, MI (116.6 mi)
Escanaba River, Cornell, MI (119.6 mi)

Weather Near Copper Harbor, Michigan

Current Weather

51.1°F
Sunny
Sunny
44.9°F
50.1°F
50%
SE 20.6 mph
43.2 mph
45.4°F
31.9°F
0 in
0%
6 mi
1008 mbar
3.8

Five Day Weather Forecast

Patchy rain nearby
Thu
H: 56°F
L: 45°F
Heavy rain
Fri
H: 40°F
L: 37°F
Cloudy
Sat
H: 37°F
L: 35°F
Patchy rain nearby
Sun
H: 39°F
L: 35°F
Patchy rain nearby
Mon
H: 39°F
L: 35°F

Air Quality

AQI: 1 - Good
PM2.5: 9.68 μg/m3
PM10: 9.98 μg/m3
Carbon Monoxide: 183.68 μg/m3
Nitrogen Dioxide: 1.28 μg/m3
Sulphur Dioxide: 1.18 μg/m3
Ozone: 114 μg/m3

Astronomical

Sunrise: 6:43 AM
Sun Transit: 1:44 PM
Sunset: 8:48 PM
Daylight: 14 hrs 5 mins
Moonrise: 11:47 AM
Moon Transit: 8:00 PM
Moonset: 3:24 AM
Moon Phase: First Quarter
Moon Illumination: 39.1%

Best Times for Fishing or Hunting

Major Periods

7:30 AM - 10:00 AM
7:30 PM - 10:00 PM

Minor Periods

11:17 AM - 12:47 AM
2:54 AM - 4:24 AM

Action Rating: 2 out of 5

Flood Watch issued April 23 at 7:45AM EDT until April 25 at 8:00AM EDT by NWS Marquette MI

Effective: Thu April 23, 2026, 7:45 AM
Expires: Fri April 24, 2026, 12:00 AM

Heavy rain may fall on a deep primed snowpack leading to the melt increasing. Flows in rivers may increase quickly and reach critical levels. * WHAT...Flooding caused by rain and snowmelt continues to be possible. * WHERE...Portions of central Upper and western Upper Michigan, including the following areas, in central Upper Michigan, Baraga, Dickinson, Iron and Marquette. In western Upper Michigan, Keweenaw, Northern Houghton, Ontonagon and Southern Houghton. * WHEN...From this evening through Saturday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - 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.
Thursday, April 23, 2026

Weather Forecast

Patchy rain nearby
55.9°F
44.6°F
51.7°F
55%
0.06 in
83%
0%
23.3 mph
5.3


Air Quality

AQI: 1 - Good
PM2.5: 4.05 μg/m3
PM10: 4.38 μg/m3
Carbon Monoxide: 167.72 μg/m3
Nitrogen Dioxide: 1.55 μg/m3
Sulphur Dioxide: 0.88 μg/m3
Ozone: 95.84 μg/m3

Astronomical

Sunrise: 6:43 AM
Sun Transit: 1:44 PM
Sunset: 8:48 PM
Daylight: 14 hrs 5 mins
Moonrise: 11:47 AM
Moon Transit: 8:00 PM
Moonset: 3:24 AM
Moon Phase: First Quarter
Moon Illumination: 39.1%

Best Times for Fishing or Hunting

Major Periods

7:30 AM - 10:00 AM
7:30 PM - 10:00 PM

Minor Periods

11:17 AM - 12:47 AM
2:54 AM - 4:24 AM

Action Rating: 2 out of 5

Friday, April 24, 2026

Weather Forecast

Heavy rain
39.7°F
37.4°F
39.9°F
94%
0.81 in
92%
0%
28.4 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 5.25 μg/m3
PM10: 5.42 μg/m3
Carbon Monoxide: 170.44 μg/m3
Nitrogen Dioxide: 1.71 μg/m3
Sulphur Dioxide: 0.94 μg/m3
Ozone: 99.48 μg/m3

Astronomical

Sunrise: 6:41 AM
Sun Transit: 1:44 PM
Sunset: 8:49 PM
Daylight: 14 hrs 8 mins
Moonrise: 1:08 PM
Moon Transit: 8:52 PM
Moonset: 3:56 AM
Moon Phase: First Quarter
Moon Illumination: 50.4%

Best Times for Fishing or Hunting

Major Periods

8:25 AM - 10:55 AM
8:22 PM - 10:52 PM

Minor Periods

12:38 AM - 2:08 PM
3:26 AM - 4:56 AM

Action Rating: 3 out of 5

Saturday, April 25, 2026

Weather Forecast

Cloudy
36.5°F
35.1°F
36.2°F
94%
0 in
0%
0%
16.1 mph
5.1


Air Quality

AQI: 1 - Good
PM2.5: 3.35 μg/m3
PM10: 3.53 μg/m3
Carbon Monoxide: 162.2 μg/m3
Nitrogen Dioxide: 1.61 μg/m3
Sulphur Dioxide: 0.94 μg/m3
Ozone: 79.28 μg/m3

Astronomical

Sunrise: 6:39 AM
Sun Transit: 1:44 PM
Sunset: 8:50 PM
Daylight: 14 hrs 11 mins
Moonrise: 2:26 PM
Moon Transit: 9:40 PM
Moonset: 4:20 AM
Moon Phase: First Quarter
Moon Illumination: 61.6%

Best Times for Fishing or Hunting

Major Periods

9:15 AM - 11:45 AM
9:10 PM - 11:40 PM

Minor Periods

1:56 PM - 3:26 PM
3:50 AM - 5:20 AM

Action Rating: 3 out of 5

Sunday, April 26, 2026

Weather Forecast

Patchy rain nearby
38.5°F
35.1°F
37°F
96%
0.08 in
83%
0%
11.6 mph
5.3


Air Quality

AQI: 1 - Good
PM2.5: 2.03 μg/m3
PM10: 2.21 μg/m3
Carbon Monoxide: 155.08 μg/m3
Nitrogen Dioxide: 1.63 μg/m3
Sulphur Dioxide: 0.79 μg/m3
Ozone: 81.08 μg/m3

Astronomical

Sunrise: 6:38 AM
Sun Transit: 1:44 PM
Sunset: 8:52 PM
Daylight: 14 hrs 14 mins
Moonrise: 3:40 PM
Moon Transit: 10:25 PM
Moonset: 4:39 AM
Moon Phase: First Quarter
Moon Illumination: 72.3%

Best Times for Fishing or Hunting

Major Periods

10:01 AM - 12:31 AM
12:00 AM - 12:00 AM

Minor Periods

3:10 PM - 4:40 PM
4:09 AM - 5:39 AM

Action Rating: 2 out of 5

Monday, April 27, 2026

Weather Forecast

Patchy rain nearby
38.7°F
35.4°F
37.2°F
94%
0 in
0%
0%
24.6 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 3.56 μg/m3
PM10: 4.04 μg/m3
Carbon Monoxide: 165.45 μg/m3
Nitrogen Dioxide: 1.52 μg/m3
Sulphur Dioxide: 0.89 μg/m3
Ozone: 84.92 μg/m3

Astronomical

Sunrise: 6:36 AM
Sun Transit: 1:43 PM
Sunset: 8:53 PM
Daylight: 14 hrs 17 mins
Moonrise: 4:52 PM
Moon Transit: 11:07 PM
Moonset: 4:54 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 81.8%

Best Times for Fishing or Hunting

Major Periods

10:44 AM - 1:14 PM
12:00 AM - 12:00 AM

Minor Periods

4:22 PM - 5:52 PM
4:24 AM - 5:54 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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