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

44.4°F

Conditions: Sunny

Feels Like: 39.3°F

Heat Index: 44.4°F

Humidity: 48%

Wind: SE 8.9 mph

Wind Gusts: 18.8 mph

Wind Chill: 39.3°F

Dew Point: 26°F

Precipitation: 0 in

Cloud Cover: 0%

Visibility: 6 mi

Air Pressure: 1030 mbar

UV Index: 3

Five Day Weather Forecast

Thu
H: 46°F
L: 35°F

Fri
H: 42°F
L: 40°F

Sat
H: 48°F
L: 41°F

Sun
H: 46°F
L: 41°F

Mon
H: 49°F
L: 40°F

Air Quality

AQI: 1 - Good

PM2.5: 3.58 μg/m3

PM10: 4.48 μg/m3

Carbon Monoxide: 111.68 μg/m3
Nitrogen Dioxide: 1.18 μg/m3
Sulphur Dioxide: 0.78 μg/m3
Ozone: 78 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 1:43 PM
Sunset: 9:24 PM
Daylight: 15 hrs 22 mins

Moonrise: 10:53 AM
Moon Transit: 6:46 PM
Moonset: 1:56 AM
Moon Phase: Waxing Crescent
Moon Illumination: 23.2%

Best Times for Fishing or Hunting

Major Periods

6:18 AM - 8:48 AM
6:16 PM - 8:46 PM

Minor Periods

10:23 AM - 11:53 AM
1:26 AM - 2:56 AM

Action Rating: 3 out of 5

Frost Advisory issued May 20 at 1:57PM EDT until May 21 at 9:00AM EDT by NWS Marquette MI

Effective: Wed May 20, 2026, 1:57 PM
Expires: Thu May 21, 2026, 9:00 AM

* WHAT...Temperatures as low as 28 will result in frost formation. * WHERE...Portions of central Upper and western Upper Michigan. * WHEN...From 11 PM EDT /10 PM CDT/ this evening to 9 AM EDT /8 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.

Frost Advisory issued May 21 at 2:21AM EDT until May 21 at 9:00AM EDT by NWS Marquette MI

Effective: Thu May 21, 2026, 2:21 AM
Expires: Thu May 21, 2026, 9:00 AM

* WHAT...Temperatures as low as 28 will result in frost formation. * WHERE...Menominee, Gogebic, Keweenaw, Northern Houghton, and Ontonagon Counties. * WHEN...Until 9 AM EDT /8 AM CDT/ this morning. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. * ADDITIONAL DETAILS...Some locations further interior of the Great Lakes such as Menominee County north of US-2 and the US-45 corridor between Watersmeet and Bruce Crossing may locally experience hard freeze conditions.

Take steps now to protect tender plants from the cold.

Thursday, May 21, 2026

Weather Forecast

Conditions: Sunny

High Temperature: 46.2°F

Low Temperature: 34.5°F

Average Temperature: 40.9°F

Average Humidity: 62%

Precipitation: 0 in

Chance of Rain: 0%

Chance of Snow: 0%

Maximum Wind: 12.3 mph

UV Index: 0.5

Air Quality

AQI: 1 - Good

PM2.5: 2.4 μg/m3

PM10: 2.91 μg/m3

Carbon Monoxide: 114.68 μg/m3
Nitrogen Dioxide: 1.55 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 70.24 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 1:43 PM
Sunset: 9:24 PM
Daylight: 15 hrs 22 mins

Moonrise: 10:53 AM
Moon Transit: 6:46 PM
Moonset: 1:56 AM
Moon Phase: Waxing Crescent
Moon Illumination: 23.2%

Best Times for Fishing or Hunting

Major Periods

6:18 AM - 8:48 AM
6:16 PM - 8:46 PM

Minor Periods

10:23 AM - 11:53 AM
1:26 AM - 2:56 AM

Action Rating: 3 out of 5

Friday, May 22, 2026

Weather Forecast

Conditions: Partly Cloudy

High Temperature: 41.9°F

Low Temperature: 40.2°F

Average Temperature: 41.3°F

Average Humidity: 74%

Precipitation: 0 in

Chance of Rain: 0%

Chance of Snow: 0%

Maximum Wind: 15 mph

UV Index: 3

Air Quality

AQI: 1 - Good

PM2.5: 4.43 μg/m3

PM10: 5.04 μg/m3

Carbon Monoxide: 117.08 μg/m3
Nitrogen Dioxide: 1.55 μg/m3
Sulphur Dioxide: 0.83 μg/m3
Ozone: 79.72 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:43 PM
Sunset: 9:26 PM
Daylight: 15 hrs 25 mins

Moonrise: 12:14 AM
Moon Transit: 7:37 PM
Moonset: 2:23 AM
Moon Phase: Waxing Crescent
Moon Illumination: 33.4%

Best Times for Fishing or Hunting

Major Periods

7:11 AM - 9:41 AM
7:07 PM - 9:37 PM

Minor Periods

11:44 AM - 1:14 PM
1:53 AM - 3:23 AM

Action Rating: 3 out of 5

Saturday, May 23, 2026

Weather Forecast

Conditions: Partly Cloudy

High Temperature: 47.7°F

Low Temperature: 41.2°F

Average Temperature: 43.6°F

Average Humidity: 79%

Precipitation: 0 in

Chance of Rain: 0%

Chance of Snow: 0%

Maximum Wind: 23.3 mph

UV Index: 3

Air Quality

AQI: 1 - Good

PM2.5: 3.39 μg/m3

PM10: 3.7 μg/m3

Carbon Monoxide: 120 μg/m3
Nitrogen Dioxide: 1.55 μg/m3
Sulphur Dioxide: 0.85 μg/m3
Ozone: 82.12 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 1:43 PM
Sunset: 9:27 PM
Daylight: 15 hrs 27 mins

Moonrise: 1:31 PM
Moon Transit: 8:23 PM
Moonset: 2:44 AM
Moon Phase: First Quarter
Moon Illumination: 44.4%

Best Times for Fishing or Hunting

Major Periods

7:59 AM - 10:29 AM
7:53 PM - 10:23 PM

Minor Periods

1:01 PM - 2:31 PM
2:14 AM - 3:44 AM

Action Rating: 2 out of 5

Sunday, May 24, 2026

Weather Forecast

Conditions: Patchy rain nearby

High Temperature: 45.8°F

Low Temperature: 41.4°F

Average Temperature: 43°F

Average Humidity: 97%

Precipitation: 0.09 in

Chance of Rain: 83%

Chance of Snow: 0%

Maximum Wind: 17.9 mph

UV Index: 2

Air Quality

AQI: 1 - Good

PM2.5: 2.84 μg/m3

PM10: 2.9 μg/m3

Carbon Monoxide: 133.04 μg/m3
Nitrogen Dioxide: 2.01 μg/m3
Sulphur Dioxide: 0.88 μg/m3
Ozone: 71.44 μg/m3

Astronomical

Sunrise: 5:59 AM
Sun Transit: 1:43 PM
Sunset: 9:28 PM
Daylight: 15 hrs 29 mins

Moonrise: 2:44 PM
Moon Transit: 9:07 PM
Moonset: 3:01 AM
Moon Phase: First Quarter
Moon Illumination: 55.7%

Best Times for Fishing or Hunting

Major Periods

8:43 AM - 11:13 AM
8:37 PM - 11:07 PM

Minor Periods

2:14 PM - 3:44 PM
2:31 AM - 4:01 AM

Action Rating: 2 out of 5

Monday, May 25, 2026

Weather Forecast

Conditions: Patchy rain nearby

High Temperature: 49°F

Low Temperature: 39.7°F

Average Temperature: 43.7°F

Average Humidity: 92%

Precipitation: 0.05 in

Chance of Rain: 88%

Chance of Snow: 0%

Maximum Wind: 15 mph

UV Index: 2

Air Quality

AQI: 1 - Good

PM2.5: 2.58 μg/m3

PM10: 2.65 μg/m3

Carbon Monoxide: 157.22 μg/m3
Nitrogen Dioxide: 1.83 μg/m3
Sulphur Dioxide: 0.77 μg/m3
Ozone: 68.38 μg/m3

Astronomical

Sunrise: 5:58 AM
Sun Transit: 1:43 PM
Sunset: 9:29 PM
Daylight: 15 hrs 31 mins

Moonrise: 3:54 PM
Moon Transit: 9:49 PM
Moonset: 3:16 AM
Moon Phase: First Quarter
Moon Illumination: 66.7%

Best Times for Fishing or Hunting

Major Periods

9:26 AM - 11:56 AM
9:19 PM - 11:49 PM

Minor Periods

3:24 PM - 4:54 PM
2:46 AM - 4:16 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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Water Temperature of Lake Superior Near Copper Harbor, MI

Current Water Temperature

Temperature Locations

Local Points of Interest

Nearby Water Temperatures

Weather Near Copper Harbor, Michigan

Current Weather

Five Day Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Frost Advisory issued May 20 at 1:57PM EDT until May 21 at 9:00AM EDT by NWS Marquette MI

Frost Advisory issued May 21 at 2:21AM EDT until May 21 at 9:00AM EDT by NWS Marquette MI

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Webcams Near Copper Harbor, MI

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