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

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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 / 179 meters

Nearest Address:
Offshore
Isle Royale, MI

GPS Coordinates: 48.034, -87.73

Nearby Water Temperatures

Lake Superior, Terrace Bay Township, ON (80.6 km)
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 (76.0 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

-4°F
Overcast
Conditions: Overcast
Humidity: 64%
Feels Like: -28.3°F
Wind: N 22.1 mph
Wind Gusts: 25.5 mph
Pressure: 29.85 in
Precipitation: 0 in
Cloud Cover: 25%
Visibility: 19 mi
UV Index: 0.4

Five Day Weather Forecast

Moderate or heavy snow showers
Fri
H: 11°F
L: 6°F
Overcast
Sat
H: 27°F
L: 9°F
Partly Cloudy
Sun
H: 15°F
L: 5°F
Moderate or heavy snow showers
Mon
H: 33°F
L: 25°F
Moderate snow
Tue
H: 33°F
L: 17°F

Air Quality

AQI: 1 - Good
PM2.5: 1.35 μg/m3
PM10: 1.55 μg/m3
Carbon Monoxide: 153.85 μg/m3
Nitrogen Dioxide: 1.35 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 80 μg/m3

Astronomical

Sunrise: 8:37 AM
Sun Transit: 12:48 AM
Sunset: 4:59 PM
Daylight: 8 hrs 22 mins
Moonrise: 8:50 AM
Moon Transit: 12:30 AM
Moonset: 4:11 PM
Moon Phase: New
Moon Illumination: 1.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 2:30 PM

Minor Periods

3:41 PM - 5:11 PM
8:20 AM - 9:50 AM

Action Rating: 5 out of 5

yellow warning - winter storm - in effect

Service Notice – November 2025: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2025, changes are expected to include... 1) ECCC's initiative to upgrade the presentation of alerts into Colour-Coded Weather Alerts is tentatively set for deployment November 26, 2025. Data changes will appear in CAP following this deployment, 2) the alert name ‘extreme cold warning’ will change to ‘cold warning’, 3) two Public zone names will change in Saskatchewan, 4) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard continues, there will be changes coming to CAP and 5) other minor improvements and corrections. For more information on these changes: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/ | Notification de service – novembre 2025: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2025, il y aura des changements incluant... 1) l'initiative d'ECCC visant à améliorer la présentation des alertes sous forme d'alertes météorologiques codées par couleur est provisoirement prévue pour un déploiement le 26 novembre 2025. Des changements aux données apparaîtront dans le PAC suite à ce déploiement, 2) le nom de l’alerte ‘avertissement de froid extrême’ changera pour ‘avertissement de froid’, 3) deux noms de zones publiques seront modifiés en Saskatchewan, 4) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique se poursuit. Des changements seront également apportés au PAC et 5) d’autres améliorations et corrections mineures. Pour plus d’informations sur ces changements: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/

Effective: Thu December 18, 2025, 6:05 PM
Expires: Fri December 19, 2025, 10:05 AM

Winter storm continues through Friday morning. What: Total snowfall amounts are expected to range from near 10 cm toward the shore of Lake Superior, including the City of Thunder Bay, to 15 to 30 cm for areas inland and over the higher terrain. Reduced visibility in heavy snow and blowing snow. When: Continuing through Friday morning. Additional information: Temperatures have rapidly fallen across the area. Northerly winds gusting 50 to 70 km/h are resulting in blowing snow. The combination of heavy snow and blowing snow may result in near zero visibility at times. Total snowfall accumulations may exceed 30 cm over the higher terrain north of Lake Superior. Conditions will improve from west to east through Friday morning. ### Roads and walkways will likely be difficult to navigate. Visibility will likely be suddenly reduced to near zero at times. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm. For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.

Allow extra time for travel.


yellow warning - winter storm - in effect

Service Notice – November 2025: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2025, changes are expected to include... 1) ECCC's initiative to upgrade the presentation of alerts into Colour-Coded Weather Alerts is tentatively set for deployment November 26, 2025. Data changes will appear in CAP following this deployment, 2) the alert name ‘extreme cold warning’ will change to ‘cold warning’, 3) two Public zone names will change in Saskatchewan, 4) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard continues, there will be changes coming to CAP and 5) other minor improvements and corrections. For more information on these changes: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/ | Notification de service – novembre 2025: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2025, il y aura des changements incluant... 1) l'initiative d'ECCC visant à améliorer la présentation des alertes sous forme d'alertes météorologiques codées par couleur est provisoirement prévue pour un déploiement le 26 novembre 2025. Des changements aux données apparaîtront dans le PAC suite à ce déploiement, 2) le nom de l’alerte ‘avertissement de froid extrême’ changera pour ‘avertissement de froid’, 3) deux noms de zones publiques seront modifiés en Saskatchewan, 4) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique se poursuit. Des changements seront également apportés au PAC et 5) d’autres améliorations et corrections mineures. Pour plus d’informations sur ces changements: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/

Effective: Thu December 18, 2025, 11:41 PM
Expires: Fri December 19, 2025, 2:04 PM

Winter storm continues through Friday morning. What: Total snowfall amounts are expected to range from near 10 cm toward the shore of Lake Superior, including the City of Thunder Bay, to 15 to 30 cm for areas inland and over the higher terrain. Reduced visibility in heavy snow and blowing snow. When: Continuing through Friday morning. Additional information: Northerly winds gusting 50 to 70 km/h are resulting in blowing snow. The combination of heavy snow and blowing snow may result in near zero visibility at times. Total snowfall accumulations may exceed 30 cm over the higher terrain north of Lake Superior. Conditions will improve from west to east through Friday morning. ### Roads and walkways will likely be difficult to navigate. Visibility will likely be suddenly reduced to near zero at times. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm. For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.

Allow extra time for travel.


yellow warning - winter storm - ended

Service Notice – November 2025: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2025, changes are expected to include... 1) ECCC's initiative to upgrade the presentation of alerts into Colour-Coded Weather Alerts is tentatively set for deployment November 26, 2025. Data changes will appear in CAP following this deployment, 2) the alert name ‘extreme cold warning’ will change to ‘cold warning’, 3) two Public zone names will change in Saskatchewan, 4) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard continues, there will be changes coming to CAP and 5) other minor improvements and corrections. For more information on these changes: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/ | Notification de service – novembre 2025: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2025, il y aura des changements incluant... 1) l'initiative d'ECCC visant à améliorer la présentation des alertes sous forme d'alertes météorologiques codées par couleur est provisoirement prévue pour un déploiement le 26 novembre 2025. Des changements aux données apparaîtront dans le PAC suite à ce déploiement, 2) le nom de l’alerte ‘avertissement de froid extrême’ changera pour ‘avertissement de froid’, 3) deux noms de zones publiques seront modifiés en Saskatchewan, 4) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique se poursuit. Des changements seront également apportés au PAC et 5) d’autres améliorations et corrections mineures. Pour plus d’informations sur ces changements: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/

Effective: Fri December 19, 2025, 5:32 AM
Expires: Fri December 19, 2025, 6:32 AM

Winter storm conditions are no longer expected. ###


Friday, December 19, 2025

Weather Forecast

Conditions: Moderate or heavy snow showers
Average Temperature: 10.8°F
Average Humidity: 90%
Chance of Rain: 83%
Wind: 34.9 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 1.21 μg/m3
PM10: 1.31 μg/m3
Carbon Monoxide: 147.05 μg/m3
Nitrogen Dioxide: 1.07 μg/m3
Sulphur Dioxide: 1.23 μg/m3
Ozone: 79.08 μg/m3

Astronomical

Sunrise: 8:37 AM
Sun Transit: 12:48 AM
Sunset: 4:59 PM
Daylight: 8 hrs 22 mins
Moonrise: 8:50 AM
Moon Transit: 12:30 AM
Moonset: 4:11 PM
Moon Phase: New
Moon Illumination: 1.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 2:30 PM

Minor Periods

3:41 PM - 5:11 PM
8:20 AM - 9:50 AM

Action Rating: 5 out of 5

Saturday, December 20, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 21.1°F
Average Humidity: 77%
Chance of Rain: 0%
Wind: 28.2 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 2.21 μg/m3
PM10: 2.41 μg/m3
Carbon Monoxide: 147.89 μg/m3
Nitrogen Dioxide: 1.89 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 79.44 μg/m3

Astronomical

Sunrise: 8:38 AM
Sun Transit: 12:48 AM
Sunset: 5:00 PM
Daylight: 8 hrs 22 mins
Moonrise: 9:41 AM
Moon Transit: 1:23 PM
Moonset: 5:08 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:45 AM - 3:15 AM
12:53 AM - 3:23 PM

Minor Periods

4:38 PM - 6:08 PM
9:11 AM - 10:41 AM

Action Rating: 4 out of 5

Sunday, December 21, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 9.5°F
Average Humidity: 79%
Chance of Rain: 0%
Wind: 29.3 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 1.34 μg/m3
PM10: 1.43 μg/m3
Carbon Monoxide: 143.21 μg/m3
Nitrogen Dioxide: 1.31 μg/m3
Sulphur Dioxide: 1.26 μg/m3
Ozone: 78.12 μg/m3

Astronomical

Sunrise: 8:39 AM
Sun Transit: 12:49 AM
Sunset: 5:00 PM
Daylight: 8 hrs 22 mins
Moonrise: 10:22 AM
Moon Transit: 2:15 PM
Moonset: 6:14 PM
Moon Phase: New
Moon Illumination: 1.5%

Best Times for Fishing or Hunting

Major Periods

1:38 AM - 4:08 AM
1:45 PM - 4:15 PM

Minor Periods

5:44 PM - 7:14 PM
9:52 AM - 11:22 AM

Action Rating: 3 out of 5

Monday, December 22, 2025

Weather Forecast

Conditions: Moderate or heavy snow showers
Average Temperature: 30.8°F
Average Humidity: 73%
Chance of Rain: 69%
Wind: 24.2 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 3.89 μg/m3
PM10: 4.47 μg/m3
Carbon Monoxide: 152.63 μg/m3
Nitrogen Dioxide: 3.2 μg/m3
Sulphur Dioxide: 1.5 μg/m3
Ozone: 75.72 μg/m3

Astronomical

Sunrise: 8:39 AM
Sun Transit: 12:49 AM
Sunset: 5:01 PM
Daylight: 8 hrs 22 mins
Moonrise: 10:53 AM
Moon Transit: 3:05 PM
Moonset: 7:25 PM
Moon Phase: Waxing Crescent
Moon Illumination: 5.5%

Best Times for Fishing or Hunting

Major Periods

2:30 AM - 5:00 AM
2:35 PM - 5:05 PM

Minor Periods

6:55 PM - 8:25 PM
10:23 AM - 11:53 AM

Action Rating: 3 out of 5

Tuesday, December 23, 2025

Weather Forecast

Conditions: Moderate snow
Average Temperature: 28°F
Average Humidity: 79%
Chance of Rain: 65%
Wind: 21.7 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 4.78 μg/m3
PM10: 5.39 μg/m3
Carbon Monoxide: 177.54 μg/m3
Nitrogen Dioxide: 4.13 μg/m3
Sulphur Dioxide: 1.92 μg/m3
Ozone: 63.85 μg/m3

Astronomical

Sunrise: 8:39 AM
Sun Transit: 12:50 AM
Sunset: 5:01 PM
Daylight: 8 hrs 22 mins
Moonrise: 11:17 AM
Moon Transit: 3:53 PM
Moonset: 8:39 PM
Moon Phase: Waxing Crescent
Moon Illumination: 11.7%

Best Times for Fishing or Hunting

Major Periods

3:18 AM - 5:48 AM
3:23 PM - 5:53 PM

Minor Periods

8:09 PM - 9:39 PM
10:47 AM - 12:17 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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