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

75.9°F
Sunny
Sunny
79.4°F
65.7°F
69%
WSW 12.1 mph
25.4 mph
65.7°F
59.4°F
0 in
0%
5 mi
1018 mbar
1.3

Five Day Weather Forecast

Sunny
Sun
H: 82°F
L: 66°F
Sunny
Mon
H: 81°F
L: 63°F
Sunny
Tue
H: 69°F
L: 60°F
Sunny
Wed
H: 64°F
L: 56°F
Sunny
Thu
H: 60°F
L: 51°F

Air Quality

AQI: 1 - Good
PM2.5: 7.5 μg/m3
PM10: 8.3 μg/m3
Carbon Monoxide: 121 μg/m3
Nitrogen Dioxide: 1 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 114 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:52 PM
Sunset: 9:42 PM
Daylight: 15 hrs 41 mins
Moonrise: 3:21 AM
Moon Transit: 12:05 AM
Moonset: 8:49 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:35 AM - 2:05 PM

Minor Periods

8:19 PM - 9:49 PM
2:51 AM - 4:21 AM

Action Rating: 3 out of 5

squall watch in effect

Effective: Sun July 12, 2026, 10:00 AM
Expires: Sun July 12, 2026, 6:59 PM

Conditions are favourable for the development of squalls with wind gusts up to 35 knots, frequent lightning, hail and poor to very poor visibility in thunderstorms heavy at times. Thunderstorms are expected to track southeast across portions of Lake Superior through this morning and early afternoon. ### Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.

Vessels without lightning protection should make their way to shore immediately. Mariners are advised to prepare for potential squalls. Vulnerable vessels are most at risk and should seek safe harbour if underway.


squall watch in effect

Effective: Sun July 12, 2026, 10:00 AM
Expires: Sun July 12, 2026, 6:59 PM

Conditions are favourable for the development of squalls with wind gusts up to 35 knots, frequent lightning, hail and poor to very poor visibility in thunderstorms heavy at times. ### Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.

Vessels without lightning protection should make their way to shore immediately. Mariners are advised to prepare for potential squalls. Vulnerable vessels are most at risk and should seek safe harbour if underway.
Sunday, July 12, 2026

Weather Forecast

Sunny
82.4°F
65.7°F
74.3°F
73%
0 in
17%
0%
19.7 mph
8.2


Air Quality

AQI: 1 - Good
PM2.5: 5.05 μg/m3
PM10: 5.65 μg/m3
Carbon Monoxide: 118.33 μg/m3
Nitrogen Dioxide: 0.87 μg/m3
Sulphur Dioxide: 0.23 μg/m3
Ozone: 90.5 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:52 PM
Sunset: 9:42 PM
Daylight: 15 hrs 41 mins
Moonrise: 3:21 AM
Moon Transit: 12:05 AM
Moonset: 8:49 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:35 AM - 2:05 PM

Minor Periods

8:19 PM - 9:49 PM
2:51 AM - 4:21 AM

Action Rating: 3 out of 5

Monday, July 13, 2026

Weather Forecast

Sunny
81.3°F
63.2°F
71.9°F
68%
0 in
5%
0%
26.8 mph
8.9


Air Quality

AQI: 1 - Good
PM2.5: 4.45 μg/m3
PM10: 4.83 μg/m3
Carbon Monoxide: 116.5 μg/m3
Nitrogen Dioxide: 0.9 μg/m3
Sulphur Dioxide: 0.23 μg/m3
Ozone: 104.29 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 1:52 PM
Sunset: 9:41 PM
Daylight: 15 hrs 39 mins
Moonrise: 4:31 AM
Moon Transit: 1:11 PM
Moonset: 9:41 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:37 AM - 3:07 AM
12:41 AM - 3:11 PM

Minor Periods

9:11 PM - 10:41 PM
4:01 AM - 5:31 AM

Action Rating: 3 out of 5

Tuesday, July 14, 2026

Weather Forecast

Sunny
69.1°F
59.8°F
64.1°F
78%
0 in
9%
0%
25.9 mph
8.9


Air Quality

AQI: 1 - Good
PM2.5: 3.4 μg/m3
PM10: 3.56 μg/m3
Carbon Monoxide: 116.71 μg/m3
Nitrogen Dioxide: 0.99 μg/m3
Sulphur Dioxide: 0.22 μg/m3
Ozone: 97.29 μg/m3

Astronomical

Sunrise: 6:03 AM
Sun Transit: 1:52 PM
Sunset: 9:40 PM
Daylight: 15 hrs 37 mins
Moonrise: 5:54 AM
Moon Transit: 2:15 PM
Moonset: 10:19 PM
Moon Phase: New
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

1:42 AM - 4:12 AM
1:45 PM - 4:15 PM

Minor Periods

9:49 PM - 11:19 PM
5:24 AM - 6:54 AM

Action Rating: 4 out of 5

Wednesday, July 15, 2026

Weather Forecast

Sunny
64.4°F
56.1°F
59.5°F
69%
0 in
6%
0%
10.7 mph
8.2


Air Quality

AQI: 1 - Good
PM2.5: 3.28 μg/m3
PM10: 3.32 μg/m3
Carbon Monoxide: 123.46 μg/m3
Nitrogen Dioxide: 0.87 μg/m3
Sulphur Dioxide: 0.32 μg/m3
Ozone: 78.17 μg/m3

Astronomical

Sunrise: 6:04 AM
Sun Transit: 1:52 PM
Sunset: 9:40 PM
Daylight: 15 hrs 35 mins
Moonrise: 7:22 AM
Moon Transit: 3:14 PM
Moonset: 10:47 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

2:43 AM - 5:13 AM
2:44 PM - 5:14 PM

Minor Periods

10:17 PM - 11:47 PM
6:52 AM - 8:22 AM

Action Rating: 3 out of 5

Thursday, July 16, 2026

Weather Forecast

Sunny
59.6°F
51.1°F
54.9°F
71%
0 in
7%
0%
11.2 mph
8.1


Air Quality

AQI: 1 - Good
PM2.5: 3.64 μg/m3
PM10: 3.69 μg/m3
Carbon Monoxide: 165.56 μg/m3
Nitrogen Dioxide: 1.29 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 69.11 μg/m3

Astronomical

Sunrise: 6:05 AM
Sun Transit: 1:52 PM
Sunset: 9:39 PM
Daylight: 15 hrs 33 mins
Moonrise: 8:48 AM
Moon Transit: 4:07 PM
Moonset: 11:08 PM
Moon Phase: New
Moon Illumination: 2.4%

Best Times for Fishing or Hunting

Major Periods

3:39 AM - 6:09 AM
3:37 PM - 6:07 PM

Minor Periods

12:00 AM - 12:00 AM
8:18 AM - 9:48 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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