Water Temperature of Lake Superior Near Copper Harbor, MI
Current Water Temperature
Measurement Time: Tuesday, December 2, 2025, 1:20 PM EST
Temperature Locations
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Local Points of Interest
Quebec HarbourStation 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

Five Day Weather Forecast

Sat
H: 68°F
L: 53°F

Sun
H: 62°F
L: 53°F

Mon
H: 64°F
L: 57°F

Tue
H: 59°F
L: 51°F

Wed
H: 59°F
L: 52°F
Air Quality
Nitrogen Dioxide: 1.2 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 100 μg/m3
Astronomical
Sun Transit: 1:52 PM
Sunset: 9:37 PM
Daylight: 15 hrs 29 mins
Moon Transit: 5:41 PM
Moonset: 12:26 AM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%
Best Times for Fishing or Hunting
Major Periods
5:16 AM - 7:46 AM5:11 PM - 7:41 PM
Minor Periods
10:55 AM - 12:25 AM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Air Quality Alert issued July 17 at 10:39AM EDT by NWS Marquette MI
Effective: Fri July 17, 2026, 10:39 AM
Expires: Sat July 18, 2026, 12:00 PM
The Michigan Department of Environment, Great Lakes, and Energy (EGLE) has issued an Air Quality Alert for July 17 and July 18 2026, for elevated levels of fine particulate due to wildfire smoke. Concentrations on Friday will range from Very Unhealthy in southern areas to Hazardous in the north. On Saturday concentrations will range from Unhealthy to Sensitive Groups (USG) in the south to Very Unhealthy in northern portions of the state. This is a Statewide Air Quality Alert. Plumes of smoke from Canadian wildfires continue to drift across the region. Elevated fine particulate due to the smoke will continue through Saturday. The threat of increased ozone may come into play Saturday as well. Everyone should seek cleaner air indoors and keep activity levels low. While indoors, take action to improve the indoor air quality such as: - Close windows and minimize opening of doors. - If HVAC systems are not equipped with MERV-13 filters or higher, use portable air cleaners. - Avoid activities that make indoor air quality worse such as burning candles, using vacuums without a HEPA filter, using gas stoves more than necessary, smoking, and spraying aerosol products. If you must be outdoors for short periods of time: - Wear an N95 or P100 respirator marked with NIOSH. The respirator should fit tightly, collapse as you breathe in and not let air in from the sides. - Do not use masks for children under age 2. For up-to-date air quality data for Michigan, visit the MiAir site: Michigan.gov/MiAir For up-to-date air quality data nationally, visit EPA's Air Now site: https://www.airnow.gov For further health information, please see MDHHS' Wildfire Smoke and Your Health site at https://www.michigan.gov/mdhhs/safety-injury- prev/environmental-health/your-health-and-wildfire-smoke. Air Quality Alert Michigan Department of Environment, Great Lakes, and Energy July 17 2026
Small Craft Advisory issued July 17 at 3:05PM EDT until July 18 at 6:00PM EDT by NWS Marquette MI
Effective: Fri July 17, 2026, 3:05 PM
Expires: Sat July 18, 2026, 3:15 AM
* WHAT...For the Dense Smoke Advisory, dense smoke will reduce visibility to less than one nautical mile at times. For the Small Craft Advisory, northwest winds 10 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft expected. * WHERE...Huron Islands to Marquette MI and Marquette to Munising MI. * WHEN...For the Dense Smoke Advisory, until 6 AM EDT Saturday. For the Small Craft Advisory, from 4 AM to 6 PM EDT Saturday. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult.
Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass.
Dense Smoke Advisory issued July 17 at 3:05PM EDT until July 18 at 6:00AM EDT by NWS Marquette MI
Effective: Fri July 17, 2026, 3:05 PM
Expires: Sat July 18, 2026, 3:15 AM
* WHAT...For the Dense Smoke Advisory, dense smoke will reduce visibility to less than one nautical mile at times. For the Small Craft Advisory, northwest winds 10 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft expected. * WHERE...Huron Islands to Marquette MI and Marquette to Munising MI. * WHEN...For the Dense Smoke Advisory, until 6 AM EDT Saturday. For the Small Craft Advisory, from 4 AM to 6 PM EDT Saturday. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult.
Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass.
Dense Smoke Advisory issued July 17 at 10:04PM EDT until July 18 at 6:00AM EDT by NWS Marquette MI
Effective: Fri July 17, 2026, 10:04 PM
Expires: Sat July 18, 2026, 10:15 AM
* WHAT...For the Dense Smoke Advisory, dense smoke will reduce visibility to less than one nautical mile. For the Small Craft Advisory, northwest winds 10 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft expected. * WHERE...Huron Islands to Marquette MI and Marquette to Munising MI. * WHEN...For the Dense Smoke Advisory, until 6 AM EDT Saturday. For the Small Craft Advisory, from 4 AM to 6 PM EDT Saturday. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult.
Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass.
Small Craft Advisory issued July 17 at 10:04PM EDT until July 18 at 6:00PM EDT by NWS Marquette MI
Effective: Fri July 17, 2026, 10:04 PM
Expires: Sat July 18, 2026, 10:15 AM
* WHAT...For the Dense Smoke Advisory, dense smoke will reduce visibility to less than one nautical mile. For the Small Craft Advisory, northwest winds 10 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft expected. * WHERE...Huron Islands to Marquette MI and Marquette to Munising MI. * WHEN...For the Dense Smoke Advisory, until 6 AM EDT Saturday. For the Small Craft Advisory, from 4 AM to 6 PM EDT Saturday. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult.
Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass.
Weather Forecast
Air Quality
Nitrogen Dioxide: 2.21 μg/m3
Sulphur Dioxide: 1.86 μg/m3
Ozone: 133.38 μg/m3
Astronomical
Sun Transit: 1:52 PM
Sunset: 9:37 PM
Daylight: 15 hrs 29 mins
Moon Transit: 5:41 PM
Moonset: 12:26 AM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%
Best Times for Fishing or Hunting
Major Periods
5:16 AM - 7:46 AM5:11 PM - 7:41 PM
Minor Periods
10:55 AM - 12:25 AM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.12 μg/m3
Sulphur Dioxide: 0.91 μg/m3
Ozone: 123.83 μg/m3
Astronomical
Sun Transit: 1:52 PM
Sunset: 9:36 PM
Daylight: 15 hrs 27 mins
Moon Transit: 6:24 PM
Moonset: 12:42 AM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%
Best Times for Fishing or Hunting
Major Periods
6:01 AM - 8:31 AM5:54 PM - 8:24 PM
Minor Periods
12:09 AM - 1:39 PM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0.95 μg/m3
Sulphur Dioxide: 0.38 μg/m3
Ozone: 110.63 μg/m3
Astronomical
Sun Transit: 1:52 PM
Sunset: 9:35 PM
Daylight: 15 hrs 25 mins
Moon Transit: 7:08 PM
Moonset: 12:58 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%
Best Times for Fishing or Hunting
Major Periods
6:44 AM - 9:14 AM6:38 PM - 9:08 PM
Minor Periods
1:21 PM - 2:51 PM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 5.21 μg/m3
Sulphur Dioxide: 0.58 μg/m3
Ozone: 90.17 μg/m3
Astronomical
Sun Transit: 1:52 PM
Sunset: 9:34 PM
Daylight: 15 hrs 23 mins
Moon Transit: 7:52 PM
Moonset: 12:15 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%
Best Times for Fishing or Hunting
Major Periods
7:28 AM - 9:58 AM7:22 PM - 9:52 PM
Minor Periods
2:32 PM - 4:02 PM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 2.36 μg/m3
Sulphur Dioxide: 0.97 μg/m3
Ozone: 73.22 μg/m3
Astronomical
Sun Transit: 1:52 PM
Sunset: 9:33 PM
Daylight: 15 hrs 21 mins
Moon Transit: 8:38 PM
Moonset: 12:34 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%
Best Times for Fishing or Hunting
Major Periods
8:13 AM - 10:43 AM8:08 PM - 10:38 PM
Minor Periods
3:42 PM - 5:12 PM12:04 AM - 1:34 AM
Action Rating: 2 out of 5
