World Resorts Canada Thunder Bay Weather

Thunder Bay 7 Days Forecast

13.01
tue
Day
34°F
SE 7 mph
Precip.
0%
Night
12°F
S 21 mph
Precip.
0%
14.01
wed
Day
9°F
S 14 mph
Precip.
0%
Night
5°F
SE 7 mph
Precip.
0%
15.01
thu
Day
10°F
NE 4 mph
Precip.
0%
Night
18°F
NE 8 mph
Precip.
70%
16.01
fri
Day
28°F
E 7 mph
Precip.
83%
Night
14°F
SE 12 mph
Precip.
81%
17.01
sat
Day
-13°F
SE 13 mph
Precip.
0%
Night
-13°F
SE 8 mph
Precip.
0%
18.01
sun
Day
-11°F
SE 4 mph
Precip.
0%
Night
1°F
SW 3 mph
Precip.
100%
19.01
mon
Day
10°F
SE 13 mph
Precip.
100%
Night
3°F
SE 11 mph
Precip.
0%

Sea water temperature in January, °F

Show year:
2025
2024
2023

The average sea water temperature in January of 2025 was 35.1°F. The highest and lowest sea temperatures during the month were 36.3°F and 34.0°F.

Air temperature in Thunder Bay, °F

Precipitation total in Thunder Bay, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Thunder Bay

Sunniest months:
September 14 days
August 14 days
July 12 days
Warmest months:
July 69.3 °F
August 69.1 °F
June 63.0 °F
Warmest sea temp:
August 63.4 °F
September 60.2 °F
July 59.6 °F
Coldest months:
February 14.2 °F
January 14.8 °F
December 21.1 °F
Rainiest months:
September 2 days
August 2 days
April 2 days
Windiest months:
November 9.6 mph
December 9.2 mph
April 8.8 mph

Thunder Bay on a weather map

Thunder Bay
+34°F
SE 7 mph
Feels like: +30°F
Precip.: 0%
Places in Canada:
Name
°F
+50°F
+50°F
+19°F
+37°F
+3°F
+32°F
+36°F
+34°F
+43°F
+34°F
+39°F
+30°F
+36°F
+37°F
24 Hours Forecast
Thunder Bay
Local time: 13:05
January 13, tuesday
1500
37°F
SE
11 mph
1800
34°F
SE
12 mph
2100
23°F
S
20 mph
January 14, wednesday
0000
12°F
S
21 mph
0300
7°F
S
19 mph
0600
5°F
S
18 mph
0900
3°F
S
16 mph
1200
9°F
S
14 mph
Units of measurement: °C / °F