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: 69°F
L: 62°F

Sun
H: 66°F
L: 54°F

Mon
H: 62°F
L: 57°F

Tue
H: 59°F
L: 51°F

Wed
H: 57°F
L: 51°F
Air Quality
Nitrogen Dioxide: 1.9 μg/m3
Sulphur Dioxide: 2.4 μg/m3
Ozone: 161 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 18 at 11:34AM EDT by NWS Marquette MI
Effective: Sat July 18, 2026, 11:34 AM
Expires: Sun July 19, 2026, 3:30 PM
The Michigan Department of Environment, Great Lakes, and Energy (EGLE) has issued an Air Quality Alert for July 18 and July 19, 2026, for elevated levels of fine particulate due to wildfire smoke. Concentrations on Saturday will range from Unhealthy for Sensitive Groups (USG) in northern half of the lower peninsula to Unhealthy across the upper peninsula. On Sunday concentrations will range from USG across the lower peninsula to Unhealthy in the upper peninsula. Saturday, July 18, 2026, Air Quality Alert covers the upper peninsula, and the northern half of the lower peninsula. Sunday, July 19, 2026, will be a Statewide Air Quality Alert. Smoke has improved across the southern portion of Michigan early Saturday; however, another plume is forecast to track through the state Saturday, lasting into Sunday. The upper peninsula will be most affected by the smoke on Saturday with fine particulate levels deteriorating from north to south through Saturday. Concentrations will be high enough across northern areas to warrant an Air Quality Alert for Saturday, and by Sunday levels will be high enough to warrant another statewide Alert. With smoke lingering across the state, ozone also has the potential to increase quickly. It is recommended that, when possible, you avoid strenuous outdoor activities, especially those with heart disease and respiratory conditions like asthma. Watch for symptoms including wheezing, coughing, chest tightness, dizziness, or burning in nose, throat, and eyes. You can help reduce air pollution by limiting activities, such as: - outdoor burning; - use of residential wood burning devices. Tips for households: - Keep windows closed overnight to prevent smoke from getting indoors and, if possible, run central air conditioning with MERV-13 or higher rated filters. 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 EPAs Air Now site: AirNow.gov For further health information, please see MDHHS Wildfire Smoke and Your Health site: 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 18, 2026
Small Craft Advisory issued July 18 at 4:23AM EDT until July 18 at 6:00PM EDT by NWS Marquette MI
Effective: Sat July 18, 2026, 4:23 AM
Expires: Sat July 18, 2026, 4:30 PM
* WHAT...For the Small Craft Advisory, northwest winds 10 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft occurring. For the Dense Smoke Advisory, dense smoke will reduce visibility to less than one nautical mile. * WHERE...Huron Islands to Marquette MI and Marquette to Munising MI. * WHEN...For the Small Craft Advisory, until 6 PM EDT this evening. For the Dense Smoke Advisory, from 8 AM this morning to 8 PM EDT Sunday. * 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 18 at 4:23AM EDT until July 19 at 8:00PM EDT by NWS Marquette MI
Effective: Sat July 18, 2026, 4:23 AM
Expires: Sat July 18, 2026, 4:30 PM
* WHAT...For the Small Craft Advisory, northwest winds 10 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft occurring. For the Dense Smoke Advisory, dense smoke will reduce visibility to less than one nautical mile. * WHERE...Huron Islands to Marquette MI and Marquette to Munising MI. * WHEN...For the Small Craft Advisory, until 6 PM EDT this evening. For the Dense Smoke Advisory, from 8 AM this morning to 8 PM EDT Sunday. * 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 18 at 11:03AM EDT until July 18 at 8:00PM EDT by NWS Marquette MI
Effective: Sat July 18, 2026, 11:03 AM
Expires: Sat July 18, 2026, 11:15 PM
* WHAT...For the Small Craft Advisory, northwest winds 10 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft occurring. For the Dense Smoke Advisory, dense smoke will reduce visibility to less than one nautical mile. * WHERE...Huron Islands to Marquette MI and Marquette to Munising MI. * WHEN...For the Small Craft Advisory, until 8 PM EDT this evening. For the Dense Smoke Advisory, until 8 PM EDT Sunday. * 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 18 at 11:03AM EDT until July 19 at 8:00PM EDT by NWS Marquette MI
Effective: Sat July 18, 2026, 11:03 AM
Expires: Sat July 18, 2026, 11:15 PM
* WHAT...For the Small Craft Advisory, northwest winds 10 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft occurring. For the Dense Smoke Advisory, dense smoke will reduce visibility to less than one nautical mile. * WHERE...Huron Islands to Marquette MI and Marquette to Munising MI. * WHEN...For the Small Craft Advisory, until 8 PM EDT this evening. For the Dense Smoke Advisory, until 8 PM EDT Sunday. * 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
