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

23.4°F
Partly Cloudy
Partly Cloudy
14.8°F
22.6°F
92%
WNW 7.4 mph
11.3 mph
19.7°F
15.2°F
0 in
0%
1 mi
1017 mbar
0

Five Day Weather Forecast

Partly Cloudy
Tue
H: 32°F
L: 20°F
Blowing snow
Wed
H: 27°F
L: 26°F
Blowing snow
Thu
H: 31°F
L: 28°F
Blizzard
Fri
H: 29°F
L: 25°F
Light snow showers
Sat
H: 25°F
L: 23°F

Air Quality

AQI: 1 - Good
PM2.5: 3.68 μg/m3
PM10: 4.58 μg/m3
Carbon Monoxide: 166.68 μg/m3
Nitrogen Dioxide: 1.88 μg/m3
Sulphur Dioxide: 0.98 μg/m3
Ozone: 73 μg/m3

Astronomical

Sunrise: 7:48 AM
Sun Transit: 1:00 PM
Sunset: 6:13 PM
Daylight: 10 hrs 25 mins
Moonrise: 8:01 AM
Moon Transit: 1:13 PM
Moonset: 6:38 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:48 AM - 3:18 AM
12:43 AM - 3:13 PM

Minor Periods

6:08 PM - 7:38 PM
7:31 AM - 9:01 AM

Action Rating: 5 out of 5

The Winter Storm Watch has been replaced. Please see the latest information from NWS Marquette MI on this developing situation.

Effective: Tue February 17, 2026, 3:14 AM
Expires: Tue February 17, 2026, 3:29 AM

The Winter Storm Watch has been replaced. Please see the latest information from NWS Marquette MI on this developing situation.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Prepare for possible power outages.


Winter Storm Warning issued February 17 at 3:14AM EST until February 18 at 7:00PM EST by NWS Marquette MI

Effective: Tue February 17, 2026, 3:14 AM
Expires: Tue February 17, 2026, 11:15 AM

* WHAT...Heavy mixed precipitation expected. Total snow accumulations between 5 and 11 inches and ice accumulations from a light glaze to around one tenth of an inch. Highest snow accumulations over the Keweenaw and in the higher terrain of Marquette and Baraga Counties. Winds gusting as high as 50 mph, mainly over the Keweenaw. * WHERE...Baraga, Marquette, Keweenaw, and Northern Houghton Counties. * WHEN...From 7 PM this evening to 7 PM EST Wednesday. * IMPACTS...Travel could be very difficult. Widespread blowing snow will significantly reduce visibility. The hazardous conditions will impact the Wednesday morning and evening commutes. Gusty winds could bring down tree branches.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Prepare for possible power outages.
Tuesday, February 17, 2026

Weather Forecast

Partly Cloudy
31.6°F
19.9°F
26.8°F
83%
0 in
0%
0%
23 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 2.68 μg/m3
PM10: 3.31 μg/m3
Carbon Monoxide: 172.84 μg/m3
Nitrogen Dioxide: 1.71 μg/m3
Sulphur Dioxide: 1.08 μg/m3
Ozone: 73.12 μg/m3

Astronomical

Sunrise: 7:48 AM
Sun Transit: 1:00 PM
Sunset: 6:13 PM
Daylight: 10 hrs 25 mins
Moonrise: 8:01 AM
Moon Transit: 1:13 PM
Moonset: 6:38 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:48 AM - 3:18 AM
12:43 AM - 3:13 PM

Minor Periods

6:08 PM - 7:38 PM
7:31 AM - 9:01 AM

Action Rating: 5 out of 5

Wednesday, February 18, 2026

Weather Forecast

Blowing snow
27.1°F
26.2°F
27.3°F
92%
2.62 in
62%
60%
33.3 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 1.41 μg/m3
PM10: 1.61 μg/m3
Carbon Monoxide: 167.08 μg/m3
Nitrogen Dioxide: 1 μg/m3
Sulphur Dioxide: 0.91 μg/m3
Ozone: 83.52 μg/m3

Astronomical

Sunrise: 7:46 AM
Sun Transit: 1:00 PM
Sunset: 6:15 PM
Daylight: 10 hrs 28 mins
Moonrise: 8:18 AM
Moon Transit: 1:58 PM
Moonset: 7:54 PM
Moon Phase: New
Moon Illumination: 1.3%

Best Times for Fishing or Hunting

Major Periods

1:34 AM - 4:04 AM
1:28 PM - 3:58 PM

Minor Periods

7:24 PM - 8:54 PM
7:48 AM - 9:18 AM

Action Rating: 4 out of 5

Thursday, February 19, 2026

Weather Forecast

Blowing snow
31.3°F
27.7°F
29.4°F
94%
0.78 in
65%
49%
24.4 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 0.93 μg/m3
PM10: 1.03 μg/m3
Carbon Monoxide: 170.08 μg/m3
Nitrogen Dioxide: 1.08 μg/m3
Sulphur Dioxide: 0.85 μg/m3
Ozone: 83.52 μg/m3

Astronomical

Sunrise: 7:45 AM
Sun Transit: 1:00 PM
Sunset: 6:16 PM
Daylight: 10 hrs 32 mins
Moonrise: 8:34 AM
Moon Transit: 4:07 PM
Moonset: 9:11 PM
Moon Phase: Waxing Crescent
Moon Illumination: 5.2%

Best Times for Fishing or Hunting

Major Periods

2:19 AM - 4:49 AM
3:37 PM - 6:07 PM

Minor Periods

8:41 PM - 10:11 PM
8:04 AM - 9:34 AM

Action Rating: 4 out of 5

Friday, February 20, 2026

Weather Forecast

Blizzard
29°F
24.5°F
28.3°F
94%
0.45 in
62%
57%
22.6 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 1.31 μg/m3
PM10: 1.41 μg/m3
Carbon Monoxide: 164.86 μg/m3
Nitrogen Dioxide: 1.17 μg/m3
Sulphur Dioxide: 0.99 μg/m3
Ozone: 82.52 μg/m3

Astronomical

Sunrise: 7:43 AM
Sun Transit: 1:00 PM
Sunset: 6:18 PM
Daylight: 10 hrs 35 mins
Moonrise: 8:50 AM
Moon Transit: 3:31 PM
Moonset: 10:30 PM
Moon Phase: Waxing Crescent
Moon Illumination: 11.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:01 PM - 5:31 PM

Minor Periods

10:00 PM - 11:30 PM
8:20 AM - 9:50 AM

Action Rating: 2 out of 5

Saturday, February 21, 2026

Weather Forecast

Light snow showers
25.4°F
23°F
24.8°F
90%
0.19 in
89%
62%
18.8 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 1.08 μg/m3
PM10: 1.25 μg/m3
Carbon Monoxide: 156.91 μg/m3
Nitrogen Dioxide: 0.94 μg/m3
Sulphur Dioxide: 0.98 μg/m3
Ozone: 86.08 μg/m3

Astronomical

Sunrise: 7:41 AM
Sun Transit: 1:00 PM
Sunset: 6:19 PM
Daylight: 10 hrs 38 mins
Moonrise: 9:08 AM
Moon Transit: 4:20 PM
Moonset: 11:51 PM
Moon Phase: Waxing Crescent
Moon Illumination: 19.4%

Best Times for Fishing or Hunting

Major Periods

3:53 AM - 6:23 AM
3:50 PM - 6:20 PM

Minor Periods

12:00 AM - 12:00 AM
8:38 AM - 10:08 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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