Water Temperature of Lake Superior in Terrace Bay Township, Ontario
Current Water Temperature
Measurement Time: Thursday, June 4, 2026, 7:00 PM 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

Thu
H: 16°C
L: 7°C

Fri
H: 14°C
L: 8°C

Sat
H: 17°C
L: 9°C

Sun
H: 15°C
L: 9°C

Mon
H: 13°C
L: 7°C
Air Quality
Nitrogen Dioxide: 0.8 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 94 μg/m3
Astronomical
Sun Transit: 1:46 PM
Sunset: 9:44 PM
Daylight: 15 hrs 56 mins
Moon Transit: 4:57 AM
Moonset: 9:10 AM
Moon Phase: Waning Gibbous
Moon Illumination: 75.3%
Best Times for Fishing or Hunting
Major Periods
4:27 AM - 6:57 AM5:16 PM - 7:46 PM
Minor Periods
8:40 AM - 10:10 AM12:22 AM - 1:52 AM
Action Rating: 2 out of 5
squall watch 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: Thu June 4, 2026, 6:05 PM
Expires: Fri June 5, 2026, 1:59 AM
Conditions are favourable for the development of squalls with wind gusts up to 45 knots. Thunderstorms are expected to track eastward into the area this evening. ### Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.
Mariners are advised to prepare for potential squalls. Vulnerable vessels are most at risk and should seek safe harbour if underway. Consider delaying or postponing travel in areas under the Squall Watch.
squall watch 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: Thu June 4, 2026, 6:05 PM
Expires: Fri June 5, 2026, 1:59 AM
Conditions are favourable for the development of squalls with wind gusts up to 45 knots. ### Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.
Mariners are advised to prepare for potential squalls. Vulnerable vessels are most at risk and should seek safe harbour if underway. Consider delaying or postponing travel in areas under the Squall Watch.
squall watch 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: Thu June 4, 2026, 4:23 PM
Expires: Fri June 5, 2026, 2:00 AM
Conditions are favourable for the development of squalls with wind gusts up to 50 knots, frequent lightning and hail. Thunderstorms are expected to track eastward into the area late this afternoon or this evening. ### Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.
Weather Forecast
Air Quality
Nitrogen Dioxide: 0.56 μg/m3
Sulphur Dioxide: 0.39 μg/m3
Ozone: 90.88 μg/m3
Astronomical
Sun Transit: 1:46 PM
Sunset: 9:44 PM
Daylight: 15 hrs 56 mins
Moon Transit: 4:57 AM
Moonset: 9:10 AM
Moon Phase: Waning Gibbous
Moon Illumination: 75.3%
Best Times for Fishing or Hunting
Major Periods
4:27 AM - 6:57 AM5:16 PM - 7:46 PM
Minor Periods
8:40 AM - 10:10 AM12:22 AM - 1:52 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0.62 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 78.33 μg/m3
Astronomical
Sun Transit: 1:46 PM
Sunset: 9:45 PM
Daylight: 15 hrs 58 mins
Moon Transit: 5:44 AM
Moonset: 10:22 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.0%
Best Times for Fishing or Hunting
Major Periods
5:14 AM - 7:44 AM6:02 PM - 8:32 PM
Minor Periods
9:52 AM - 11:22 AM12:47 AM - 2:17 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0.6 μg/m3
Sulphur Dioxide: 0.21 μg/m3
Ozone: 57.54 μg/m3
Astronomical
Sun Transit: 1:46 PM
Sunset: 9:46 PM
Daylight: 15 hrs 59 mins
Moon Transit: 6:29 AM
Moonset: 11:33 AM
Moon Phase: Last Quarter
Moon Illumination: 53.9%
Best Times for Fishing or Hunting
Major Periods
5:59 AM - 8:29 AM6:46 PM - 9:16 PM
Minor Periods
11:03 AM - 12:33 AM1:06 AM - 2:36 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0.43 μg/m3
Sulphur Dioxide: 0.25 μg/m3
Ozone: 61.71 μg/m3
Astronomical
Sun Transit: 1:46 PM
Sunset: 9:47 PM
Daylight: 16 hrs mins
Moon Transit: 7:13 AM
Moonset: 12:46 AM
Moon Phase: Last Quarter
Moon Illumination: 42.6%
Best Times for Fishing or Hunting
Major Periods
6:43 AM - 9:13 AM7:30 PM - 10:00 PM
Minor Periods
12:16 AM - 1:46 PM1:23 AM - 2:53 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0.56 μg/m3
Sulphur Dioxide: 0.24 μg/m3
Ozone: 70 μg/m3
Astronomical
Sun Transit: 1:46 PM
Sunset: 9:48 PM
Daylight: 16 hrs 1 mins
Moon Transit: 7:56 AM
Moonset: 1:59 PM
Moon Phase: Last Quarter
Moon Illumination: 31.6%
Best Times for Fishing or Hunting
Major Periods
7:26 AM - 9:56 AM8:13 PM - 10:43 PM
Minor Periods
1:29 PM - 2:59 PM1:38 AM - 3:08 AM
Action Rating: 2 out of 5
