Water Temperature of Lake Superior in Terrace Bay Township, Ontario

Current Water Temperature

1.8°C

Measurement Time: Monday, May 25, 2026, 3:00 AM EDT

Temperature Locations

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Local Points of Interest

Patterson Island; Pukaskwa National Park

Lake Superior

Station 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

3.7°C
Fog
Fog
1.7°C
4.7°C
99%
SE 7.6 kph
14.7 kph
4.2°C
4.7°C
0 mm
0%
0 km
1015 mbar
0

Five Day Weather Forecast

Moderate rain
Mon
H: 10°C
L: 4°C
Patchy rain nearby
Tue
H: 16°C
L: 7°C
Sunny
Wed
H: 16°C
L: 8°C
Sunny
Thu
H: 13°C
L: 8°C
Sunny
Fri
H: 12°C
L: 7°C

Air Quality

AQI: 1 - Good
PM2.5: 4.66 μg/m3
PM10: 5.06 μg/m3
Carbon Monoxide: 130.76 μg/m3
Nitrogen Dioxide: 1.26 μg/m3
Sulphur Dioxide: 0.96 μg/m3
Ozone: 67 μg/m3

Astronomical

Sunrise: 5:56 AM
Sun Transit: 1:44 PM
Sunset: 9:34 PM
Daylight: 15 hrs 39 mins
Moonrise: 3:56 PM
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 AM
9:20 PM - 11:50 PM

Minor Periods

3:26 PM - 4:56 PM
2:47 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.


Monday, May 25, 2026

Weather Forecast

Moderate rain
9.6°C
4°C
6.7°C
98%
8.16 mm
91%
0%
13.7 kph
5


Air Quality

AQI: 1 - Good
PM2.5: 4.3 μg/m3
PM10: 4.62 μg/m3
Carbon Monoxide: 127.32 μg/m3
Nitrogen Dioxide: 1.41 μg/m3
Sulphur Dioxide: 0.91 μg/m3
Ozone: 67.32 μg/m3

Astronomical

Sunrise: 5:56 AM
Sun Transit: 1:44 PM
Sunset: 9:34 PM
Daylight: 15 hrs 39 mins
Moonrise: 3:56 PM
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 AM
9:20 PM - 11:50 PM

Minor Periods

3:26 PM - 4:56 PM
2:47 AM - 4:17 AM

Action Rating: 3 out of 5

Tuesday, May 26, 2026

Weather Forecast

Patchy rain nearby
16.2°C
7.2°C
11.6°C
84%
0.68 mm
90%
0%
15.5 kph
7


Air Quality

AQI: 1 - Good
PM2.5: 5.12 μg/m3
PM10: 5.5 μg/m3
Carbon Monoxide: 121.84 μg/m3
Nitrogen Dioxide: 1.14 μg/m3
Sulphur Dioxide: 0.96 μg/m3
Ozone: 79.44 μg/m3

Astronomical

Sunrise: 5:55 AM
Sun Transit: 1:44 PM
Sunset: 9:35 PM
Daylight: 15 hrs 41 mins
Moonrise: 5:07 PM
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 AM
12:00 AM - 12:00 AM

Minor Periods

4:37 PM - 6:07 PM
3:01 AM - 4:31 AM

Action Rating: 3 out of 5

Wednesday, May 27, 2026

Weather Forecast

Sunny
15.7°C
8.2°C
11.9°C
72%
0.01 mm
0%
0%
15.8 kph
6.6


Air Quality

AQI: 1 - Good
PM2.5: 3.07 μg/m3
PM10: 3.3 μg/m3
Carbon Monoxide: 114.88 μg/m3
Nitrogen Dioxide: 1.2 μg/m3
Sulphur Dioxide: 0.92 μg/m3
Ozone: 70.76 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 1:45 PM
Sunset: 9:37 PM
Daylight: 15 hrs 43 mins
Moonrise: 6:17 PM
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 PM
12:00 AM - 12:00 AM

Minor Periods

5:47 PM - 7:17 PM
3:16 AM - 4:46 AM

Action Rating: 2 out of 5

Thursday, May 28, 2026

Weather Forecast

Sunny
13.1°C
8.1°C
10.5°C
74%
0.02 mm
0%
0%
10.8 kph
6.5


Air Quality

AQI: 1 - Good
PM2.5: 4.55 μg/m3
PM10: 5.24 μg/m3
Carbon Monoxide: 112.55 μg/m3
Nitrogen Dioxide: 1.21 μg/m3
Sulphur Dioxide: 0.93 μg/m3
Ozone: 63.04 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 1:45 PM
Sunset: 9:38 PM
Daylight: 15 hrs 45 mins
Moonrise: 7:27 PM
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 PM
12:00 AM - 12:00 AM

Minor Periods

6:57 PM - 8:27 PM
3:33 AM - 5:03 AM

Action Rating: 2 out of 5

Friday, May 29, 2026

Weather Forecast

Sunny
12.2°C
6.7°C
9.1°C
70%
0.01 mm
0%
0%
20.5 kph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 3.77 μg/m3
PM10: 4.51 μg/m3
Carbon Monoxide: 117.72 μg/m3
Nitrogen Dioxide: 1.35 μg/m3
Sulphur Dioxide: 1.04 μg/m3
Ozone: 65.54 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:45 PM
Sunset: 9:39 PM
Daylight: 15 hrs 46 mins
Moonrise: 8:38 PM
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 AM
12:18 AM - 2:48 PM

Minor Periods

8:08 PM - 9:38 PM
3:53 AM - 5:23 AM

Action Rating: 4 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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