Water Temperature of Lake Superior in Terrace Bay Township, Ontario
Current Water Temperature
Measurement Time: Monday, May 25, 2026, 3:00 AM EDT
Temperature Locations
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Local Points of Interest
Patterson Island; Pukaskwa National ParkStation Name: Slate Island
Station Type: Buoy
Data Source: National Data Buoy Center
Elevation Above Sea Level: 179 meters
Nearest Address:
Terrace Bay Township, ON P0T 2W0
Thunder Bay District County
GPS Coordinates: 48.54, -86.95
Nearby Water Temperatures
Lake Superior, Isle Royale, MI (80.6 km)Lake Superior, Copper Harbor, MI (109.6 km)
Washington Creek, Windigo, MI (176.6 km)
Lake Superior, Calumet, MI (187.6 km)
Pilgrim River, Houghton, MI (201.2 km)
Keweenaw Bay, Jacobsville, MI (205.5 km)
East Branch Salmon Trout River, Powell, MI (206.4 km)
Salmon Trout River, Champion, MI (207.4 km)
Grand Portage River, Grand Portage, MN (212.3 km)
Lake Superior, Marquette, MI (224.1 km)
Falls River, L'Anse, MI (229.8 km)
Miners River, Munising, MI (230.3 km)
Middle Branch Escanaba River, , MI (237.6 km)
Middle Branch Escanaba River, Humboldt, MI (237.8 km)
Sturgeon River, Pelkie, MI (239.1 km)
Weather for Terrace Bay Township, Ontario
Current Weather

Five Day Weather Forecast

Mon
H: 10°C
L: 4°C

Tue
H: 16°C
L: 7°C

Wed
H: 16°C
L: 8°C

Thu
H: 13°C
L: 8°C

Fri
H: 12°C
L: 7°C
Air Quality
Nitrogen Dioxide: 1.26 μg/m3
Sulphur Dioxide: 0.96 μg/m3
Ozone: 67 μg/m3
Astronomical
Sun Transit: 1:44 PM
Sunset: 9:34 PM
Daylight: 15 hrs 39 mins
Moon Transit: 9:50 PM
Moonset: 3:17 AM
Moon Phase: First Quarter
Moon Illumination: 66.7%
Best Times for Fishing or Hunting
Major Periods
9:24 AM - 11:54 AM9:20 PM - 11:50 PM
Minor Periods
3:26 PM - 4:56 PM2:47 AM - 4:17 AM
Action Rating: 3 out of 5
yellow advisory - fog - in effect
Service Notice – April 2026: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For Spring 2026, changes are expected to include... 1) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard is tentatively set for June 2026 deployment. Data changes will appear in CAP following this deployment, 2) marine alerts will now be issued for smaller zone splits in certain areas of Atlantic and Pacific waters and 3) 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 – avril 2026: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour le printemps 2026, il y aura des changements incluant... 1) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique devrait être déployée provisoirement en juin 2026. Des changements de données apparaîtront dans le PAC à la suite de ce déploiement, 2) les alertes marines seront désormais émises pour des subdivisions de zones plus petites dans certaines régions des eaux de l’Atlantique et du Pacifique et 3) 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: Sun May 24, 2026, 11:21 PM
Expires: Mon May 25, 2026, 2:00 PM
Near-zero visibility in fog is expected over some areas. These areas of dense fog will persist through tonight. Visibility will gradually improve through Monday morning, however, fog patches may linger into the early afternoon. ### Travel will likely be hazardous in some locations. Visibility will likely be suddenly reduced 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.
If driving, turn on your lights, slow down and maintain a safe following distance.
yellow advisory - fog - in effect
Service Notice – April 2026: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For Spring 2026, changes are expected to include... 1) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard is tentatively set for June 2026 deployment. Data changes will appear in CAP following this deployment, 2) marine alerts will now be issued for smaller zone splits in certain areas of Atlantic and Pacific waters and 3) 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 – avril 2026: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour le printemps 2026, il y aura des changements incluant... 1) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique devrait être déployée provisoirement en juin 2026. Des changements de données apparaîtront dans le PAC à la suite de ce déploiement, 2) les alertes marines seront désormais émises pour des subdivisions de zones plus petites dans certaines régions des eaux de l’Atlantique et du Pacifique et 3) 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: Sun May 24, 2026, 8:30 PM
Expires: Mon May 25, 2026, 12:30 PM
Near-zero visibility in fog is expected over some areas. These areas of dense fog will persist through tonight. Visibility will gradually improve through Monday morning, however, fog patches may linger into the early afternoon. ### Travel will likely be hazardous in some locations. Visibility will likely be suddenly reduced 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.
If driving, turn on your lights, slow down and maintain a safe following distance.
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.41 μg/m3
Sulphur Dioxide: 0.91 μg/m3
Ozone: 67.32 μg/m3
Astronomical
Sun Transit: 1:44 PM
Sunset: 9:34 PM
Daylight: 15 hrs 39 mins
Moon Transit: 9:50 PM
Moonset: 3:17 AM
Moon Phase: First Quarter
Moon Illumination: 66.7%
Best Times for Fishing or Hunting
Major Periods
9:24 AM - 11:54 AM9:20 PM - 11:50 PM
Minor Periods
3:26 PM - 4:56 PM2:47 AM - 4:17 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.14 μg/m3
Sulphur Dioxide: 0.96 μg/m3
Ozone: 79.44 μg/m3
Astronomical
Sun Transit: 1:44 PM
Sunset: 9:35 PM
Daylight: 15 hrs 41 mins
Moon Transit: 10:32 PM
Moonset: 3:31 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.9%
Best Times for Fishing or Hunting
Major Periods
10:06 AM - 12:36 AM12:00 AM - 12:00 AM
Minor Periods
4:37 PM - 6:07 PM3:01 AM - 4:31 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.2 μg/m3
Sulphur Dioxide: 0.92 μg/m3
Ozone: 70.76 μg/m3
Astronomical
Sun Transit: 1:45 PM
Sunset: 9:37 PM
Daylight: 15 hrs 43 mins
Moon Transit: 11:15 PM
Moonset: 3:46 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.7%
Best Times for Fishing or Hunting
Major Periods
10:48 AM - 1:18 PM12:00 AM - 12:00 AM
Minor Periods
5:47 PM - 7:17 PM3:16 AM - 4:46 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.21 μg/m3
Sulphur Dioxide: 0.93 μg/m3
Ozone: 63.04 μg/m3
Astronomical
Sun Transit: 1:45 PM
Sunset: 9:38 PM
Daylight: 15 hrs 45 mins
Moon Transit: 12:00 PM
Moonset: 4:03 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.7%
Best Times for Fishing or Hunting
Major Periods
11:32 AM - 2:02 PM12:00 AM - 12:00 AM
Minor Periods
6:57 PM - 8:27 PM3:33 AM - 5:03 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.35 μg/m3
Sulphur Dioxide: 1.04 μg/m3
Ozone: 65.54 μg/m3
Astronomical
Sun Transit: 1:45 PM
Sunset: 9:39 PM
Daylight: 15 hrs 46 mins
Moon Transit: 12:00 AM
Moonset: 4:23 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.4%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM12:18 AM - 2:48 PM
Minor Periods
8:08 PM - 9:38 PM3:53 AM - 5:23 AM
Action Rating: 4 out of 5
