Water Temperature of Lake Superior Near Isle Royale, MI

Current Water Temperature

42.3°F

Measurement Time: Tuesday, November 7, 2023, 12:56 AM EST

Temperature Locations

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Local Points of Interest

Isle Royale National Park; Blake Point

Lake Superior

Station Name: Isle of Royale East, MI (230)
Station Type: Buoy
Data Source: National Data Buoy Center

Elevation Above Sea Level: 587 feet

Nearest Address:
Offshore
Isle Royale, MI

GPS Coordinates: 48.034, -87.73

Nearby Water Temperatures

Lake Superior, Terrace Bay Township, ON (50.1 mi)
Lake Superior, Copper Harbor, MI (61.5 mi)
Washington Creek, Windigo, MI (65.9 mi)
Lake Superior, Calumet, MI (66.7 mi)
Pilgrim River, Houghton, MI (76 mi)
Keweenaw Bay, Jacobsville, MI (79.9 mi)
East Branch Salmon Trout River, Powell, MI (86.4 mi)
Salmon Trout River, Champion, MI (86.8 mi)
Grand Portage River, Grand Portage, MN (90.4 mi)
Falls River, L'Anse, MI (95.8 mi)
Sturgeon River, Pelkie, MI (100.4 mi)
Lake Superior, Marquette, MI (104.1 mi)
Middle Branch Escanaba River, , MI (106.3 mi)
Middle Branch Escanaba River, Humboldt, MI (106.6 mi)
Lake Superior, Lake Superior, MI (107.4 mi)

Weather Near Isle Royale, Michigan

Current Weather

-10.7°F
Light snow
Light snow
-38.6°F
-3.4°F
57%
NW 25.5 mph
29.3 mph
-28.2°F
-6.4°F
0 in
25%
19 mi
1018 mbar
0.4

Five Day Weather Forecast

Moderate or heavy snow showers
Mon
H: 4°F
L: -4°F
Light freezing rain
Tue
H: 10°F
L: -1°F
Overcast
Wed
H: 14°F
L: 10°F
Patchy moderate snow
Thu
H: 23°F
L: -14°F
Blowing snow
Fri
H: 16°F
L: -17°F

Air Quality

AQI: 1 - Good
PM2.5: 1.45 μg/m3
PM10: 1.55 μg/m3
Carbon Monoxide: 151.85 μg/m3
Nitrogen Dioxide: 1.25 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 74 μg/m3

Astronomical

Sunrise: 8:33 AM
Sun Transit: 1:01 PM
Sunset: 5:31 PM
Daylight: 8 hrs 58 mins
Moonrise: 9:22 AM
Moon Transit: 1:50 PM
Moonset: 6:28 PM
Moon Phase: New
Moon Illumination: 0.4%

Best Times for Fishing or Hunting

Major Periods

1:14 AM - 3:44 AM
1:20 PM - 3:50 PM

Minor Periods

5:58 PM - 7:28 PM
8:52 AM - 10:22 AM

Action Rating: 5 out of 5

Cold Weather Advisory issued January 18 at 9:06PM EST until January 19 at 12:00PM EST by NWS Marquette MI

Effective: Sun January 18, 2026, 9:06 PM
Expires: Mon January 19, 2026, 7:00 AM

* WHAT...Very cold wind chills as low as 25 below expected. * WHERE...Keweenaw and Northern Houghton Counties. * WHEN...From 4 AM to noon EST Monday. * IMPACTS...The dangerously cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 15 minutes.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.


Winter Storm Warning issued January 19 at 2:12AM EST until January 19 at 10:00AM EST by NWS Marquette MI

Effective: Mon January 19, 2026, 2:12 AM
Expires: Mon January 19, 2026, 10:00 AM

* WHAT...Moderate to heavy snowfall rates and blowing snow. Additional snow accumulations between 1 and 4 inches. Winds gusting as high as 40 mph. * WHERE...Keweenaw and Northern Houghton Counties. * WHEN...Until 10 AM EST this morning. * IMPACTS...Plan on slippery road conditions and very difficult to near impossible travel conditions at times. Widespread blowing snow will significantly reduce visibility. The hazardous conditions will impact the Monday morning commute. * ADDITIONAL DETAILS...Windchills will fall into the -15F to -25F range this morning.

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


Cold Weather Advisory issued January 19 at 1:44AM EST until January 20 at 9:00AM EST by NWS Marquette MI

Effective: Mon January 19, 2026, 1:44 AM
Expires: Mon January 19, 2026, 4:00 PM

* WHAT...Very cold wind chills as low as 30 below expected. * WHERE...Keweenaw and Northern Houghton Counties. * WHEN...Until 9 AM EST Tuesday. * IMPACTS...The dangerously cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 30 minutes.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.
Monday, January 19, 2026

Weather Forecast

Moderate or heavy snow showers
4.3°F
-4.2°F
0.9°F
88%
0.08 in
83%
37%
33.3 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 1.44 μg/m3
PM10: 1.59 μg/m3
Carbon Monoxide: 154.61 μg/m3
Nitrogen Dioxide: 1.17 μg/m3
Sulphur Dioxide: 1.24 μg/m3
Ozone: 69.36 μg/m3

Astronomical

Sunrise: 8:33 AM
Sun Transit: 1:01 PM
Sunset: 5:31 PM
Daylight: 8 hrs 58 mins
Moonrise: 9:22 AM
Moon Transit: 1:50 PM
Moonset: 6:28 PM
Moon Phase: New
Moon Illumination: 0.4%

Best Times for Fishing or Hunting

Major Periods

1:14 AM - 3:44 AM
1:20 PM - 3:50 PM

Minor Periods

5:58 PM - 7:28 PM
8:52 AM - 10:22 AM

Action Rating: 5 out of 5

Tuesday, January 20, 2026

Weather Forecast

Light freezing rain
9.5°F
-1.1°F
4°F
79%
0.02 in
73%
3%
20.8 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 1.67 μg/m3
PM10: 1.78 μg/m3
Carbon Monoxide: 150.17 μg/m3
Nitrogen Dioxide: 1.48 μg/m3
Sulphur Dioxide: 1.32 μg/m3
Ozone: 74.88 μg/m3

Astronomical

Sunrise: 8:32 AM
Sun Transit: 1:02 PM
Sunset: 5:32 PM
Daylight: 9 hrs mins
Moonrise: 9:43 AM
Moon Transit: 2:37 PM
Moonset: 7:43 PM
Moon Phase: New
Moon Illumination: 3.1%

Best Times for Fishing or Hunting

Major Periods

2:02 AM - 4:32 AM
2:07 PM - 4:37 PM

Minor Periods

7:13 PM - 8:43 PM
9:13 AM - 10:43 AM

Action Rating: 3 out of 5

Wednesday, January 21, 2026

Weather Forecast

Overcast
13.6°F
9.9°F
12°F
76%
0 in
0%
0%
21 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 2.98 μg/m3
PM10: 3.2 μg/m3
Carbon Monoxide: 155.64 μg/m3
Nitrogen Dioxide: 2.43 μg/m3
Sulphur Dioxide: 1.52 μg/m3
Ozone: 72.8 μg/m3

Astronomical

Sunrise: 8:31 AM
Sun Transit: 1:02 PM
Sunset: 5:34 PM
Daylight: 9 hrs 3 mins
Moonrise: 10:00 AM
Moon Transit: 3:22 PM
Moonset: 8:58 PM
Moon Phase: Waxing Crescent
Moon Illumination: 8.1%

Best Times for Fishing or Hunting

Major Periods

2:48 AM - 5:18 AM
2:52 PM - 5:22 PM

Minor Periods

8:28 PM - 9:58 PM
9:30 AM - 11:00 AM

Action Rating: 3 out of 5

Thursday, January 22, 2026

Weather Forecast

Patchy moderate snow
23.4°F
-13.8°F
4.6°F
79%
0.03 in
88%
19%
28.4 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 1.74 μg/m3
PM10: 1.84 μg/m3
Carbon Monoxide: 160.69 μg/m3
Nitrogen Dioxide: 1.53 μg/m3
Sulphur Dioxide: 1.23 μg/m3
Ozone: 69.36 μg/m3

Astronomical

Sunrise: 8:30 AM
Sun Transit: 1:02 PM
Sunset: 5:35 PM
Daylight: 9 hrs 5 mins
Moonrise: 10:16 AM
Moon Transit: 12:00 AM
Moonset: 10:13 PM
Moon Phase: Waxing Crescent
Moon Illumination: 15.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:33 AM - 6:03 AM

Minor Periods

9:43 PM - 11:13 PM
9:46 AM - 11:16 AM

Action Rating: 2 out of 5

Friday, January 23, 2026

Weather Forecast

Blowing snow
15.6°F
-16.8°F
-5.3°F
93%
0.07 in
89%
56%
26.6 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 1.05 μg/m3
PM10: 1.15 μg/m3
Carbon Monoxide: 157.77 μg/m3
Nitrogen Dioxide: 1.11 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 63.38 μg/m3

Astronomical

Sunrise: 8:29 AM
Sun Transit: 1:02 PM
Sunset: 5:37 PM
Daylight: 9 hrs 8 mins
Moonrise: 10:31 AM
Moon Transit: 9:54 AM
Moonset: 11:28 PM
Moon Phase: Waxing Crescent
Moon Illumination: 24.4%

Best Times for Fishing or Hunting

Major Periods

9:24 AM - 11:54 AM
9:24 AM - 11:54 AM

Minor Periods

12:00 AM - 12:00 AM
10:01 AM - 11:31 AM

Action Rating: 2 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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