Water Temperature of Lake Superior in Terrace Bay Township, Ontario

Current Water Temperature

5.6°C

Measurement Time: Sunday, July 26, 2026, 11:00 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

17.3°C
Partly Cloudy
Partly Cloudy
11.1°C
17.3°C
90%
S 11.5 kph
18.4 kph
17.3°C
15.6°C
0 mm
32%
10 km
1009 mbar
5.4

Five Day Weather Forecast

Fog
Sun
H: 18°C
L: 12°C
Sunny
Mon
H: 20°C
L: 11°C
Sunny
Tue
H: 19°C
L: 12°C
Partly Cloudy
Wed
H: 16°C
L: 12°C
Patchy rain nearby
Thu
H: 16°C
L: 11°C

Air Quality

AQI: 1 - Good
PM2.5: 1.9 μg/m3
PM10: 1.9 μg/m3
Carbon Monoxide: 121 μg/m3
Nitrogen Dioxide: 0.4 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 83 μg/m3

Astronomical

Sunrise: 6:15 AM
Sun Transit: 1:54 PM
Sunset: 9:33 PM
Daylight: 15 hrs 18 mins
Moonrise: 8:19 PM
Moon Transit: 12:00 AM
Moonset: 2:47 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:30 AM - 2:00 PM

Minor Periods

7:49 PM - 9:19 PM
2:17 AM - 3:47 AM

Action Rating: 3 out of 5

yellow advisory - fog - in effect

Effective: Sat July 25, 2026, 10:05 PM
Expires: Sun July 26, 2026, 2:01 PM

Near-zero visibility in fog is expected. Dense fog moving inland from Lake Superior will affect portions of the region mainly from near Marathon to the eastern shores of the lake through the night until Sunday morning. ### Visibility will likely be suddenly reduced at times. Fog advisories are issued when widespread poor visibility in fog is expected. 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 social media using #ONStorm.

If driving, turn on your lights, slow down and maintain a safe following distance.


yellow advisory - fog - in effect

Effective: Sun July 26, 2026, 6:43 AM
Expires: Sun July 26, 2026, 3:03 PM

Near-zero visibility in fog is expected. Dense fog moving inland from Lake Superior is affecting areas especially close to the lakeshore including parts of highway 17. The fog will slowly lift later this morning. ### Visibility will likely be suddenly reduced at times. Fog advisories are issued when widespread poor visibility in fog is expected. 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 social media using #ONStorm.

If driving, turn on your lights, slow down and maintain a safe following distance.


yellow advisory - fog - in effect

Effective: Sun July 26, 2026, 6:43 AM
Expires: Sun July 26, 2026, 3:03 PM

Near-zero visibility in fog is expected. ### Visibility will likely be suddenly reduced at times. Fog advisories are issued when widespread poor visibility in fog is expected. 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 social media using #ONStorm.

If driving, turn on your lights, slow down and maintain a safe following distance.


yellow advisory - fog - in effect

Effective: Sun July 26, 2026, 5:37 AM
Expires: Sun July 26, 2026, 2:07 PM

Near-zero visibility in fog is expected. Dense fog moving inland from Lake Superior will affect portions of the region mainly from near Marathon to the eastern shores of the lake into this morning. The fog will retreat back to the shore of the lake later this morning. ### Visibility will likely be suddenly reduced at times. Fog advisories are issued when widespread poor visibility in fog is expected. 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 social media using #ONStorm.

If driving, turn on your lights, slow down and maintain a safe following distance.


Sunday, July 26, 2026

Weather Forecast

Fog
18.4°C
11.9°C
15°C
94%
0.96 mm
71%
0%
11.5 kph
5.4


Air Quality

AQI: 1 - Good
PM2.5: 2.77 μg/m3
PM10: 2.8 μg/m3
Carbon Monoxide: 122.42 μg/m3
Nitrogen Dioxide: 0.66 μg/m3
Sulphur Dioxide: 0.24 μg/m3
Ozone: 73.63 μg/m3

Astronomical

Sunrise: 6:15 AM
Sun Transit: 1:54 PM
Sunset: 9:33 PM
Daylight: 15 hrs 18 mins
Moonrise: 8:19 PM
Moon Transit: 12:00 AM
Moonset: 2:47 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:30 AM - 2:00 PM

Minor Periods

7:49 PM - 9:19 PM
2:17 AM - 3:47 AM

Action Rating: 3 out of 5

Monday, July 27, 2026

Weather Forecast

Sunny
19.5°C
10.8°C
15.6°C
81%
0.12 mm
25%
0%
13 kph
5.1


Air Quality

AQI: 1 - Good
PM2.5: 4.97 μg/m3
PM10: 5.12 μg/m3
Carbon Monoxide: 123.58 μg/m3
Nitrogen Dioxide: 0.45 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 68.63 μg/m3

Astronomical

Sunrise: 6:16 AM
Sun Transit: 1:54 PM
Sunset: 9:32 PM
Daylight: 15 hrs 16 mins
Moonrise: 8:57 PM
Moon Transit: 12:00 AM
Moonset: 3:44 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:20 AM - 2:50 PM

Minor Periods

8:27 PM - 9:57 PM
3:14 AM - 4:44 AM

Action Rating: 3 out of 5

Tuesday, July 28, 2026

Weather Forecast

Sunny
19.2°C
11.7°C
15.5°C
71%
0 mm
7%
0%
14.8 kph
6.8


Air Quality

AQI: 1 - Good
PM2.5: 2.87 μg/m3
PM10: 3.04 μg/m3
Carbon Monoxide: 101.88 μg/m3
Nitrogen Dioxide: 0.4 μg/m3
Sulphur Dioxide: 0.18 μg/m3
Ozone: 52.13 μg/m3

Astronomical

Sunrise: 6:17 AM
Sun Transit: 1:54 PM
Sunset: 9:30 PM
Daylight: 15 hrs 13 mins
Moonrise: 9:25 PM
Moon Transit: 12:50 AM
Moonset: 4:51 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:20 AM - 2:50 AM
1:10 PM - 3:40 PM

Minor Periods

8:55 PM - 10:25 PM
4:21 AM - 5:51 AM

Action Rating: 4 out of 5

Wednesday, July 29, 2026

Weather Forecast

Partly Cloudy
15.5°C
11.8°C
13.6°C
73%
0 mm
9%
0%
10.8 kph
6.8


Air Quality

AQI: 1 - Good
PM2.5: 1.9 μg/m3
PM10: 2.22 μg/m3
Carbon Monoxide: 104.52 μg/m3
Nitrogen Dioxide: 0.48 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 53.29 μg/m3

Astronomical

Sunrise: 6:19 AM
Sun Transit: 1:54 PM
Sunset: 9:29 PM
Daylight: 15 hrs 10 mins
Moonrise: 9:48 PM
Moon Transit: 1:39 AM
Moonset: 6:01 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

1:09 AM - 3:39 AM
1:58 PM - 4:28 PM

Minor Periods

9:18 PM - 10:48 PM
5:31 AM - 7:01 AM

Action Rating: 4 out of 5

Thursday, July 30, 2026

Weather Forecast

Patchy rain nearby
16.2°C
10.5°C
13.6°C
83%
0.96 mm
58%
0%
13 kph
4


Air Quality

AQI: 1 - Good
PM2.5: 1.41 μg/m3
PM10: 1.62 μg/m3
Carbon Monoxide: 134.11 μg/m3
Nitrogen Dioxide: 0.58 μg/m3
Sulphur Dioxide: 0.29 μg/m3
Ozone: 57.22 μg/m3

Astronomical

Sunrise: 6:20 AM
Sun Transit: 1:54 PM
Sunset: 9:28 PM
Daylight: 15 hrs 8 mins
Moonrise: 10:07 PM
Moon Transit: 2:25 AM
Moonset: 7:13 AM
Moon Phase: Full
Moon Illumination: 97.1%

Best Times for Fishing or Hunting

Major Periods

1:55 AM - 4:25 AM
2:43 PM - 5:13 PM

Minor Periods

9:37 PM - 11:07 PM
6:43 AM - 8:13 AM

Action Rating: 5 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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