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Thunder Bay, Ontario

11°F
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Thunder Bay, Ontario Weather
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Monthly

 Air Quality Health & Activities

January

January February March April May June July August September October November December

2026

2025 2026 2027

Daily
S
M
T
W
T
F
S
28
34°
13°
29
13°
-4°
30
8°
-6°
31
7°
-8°
1
5°
-9°
2
9°
-5°
3
14°
-4°
4
16°
13°
5
27°
23°
6
34°
24°
7
34°
17°
8
33°
21°
9
29°
18°
10
21°
11°
11
24°
16°
12
28°
14°
13
17°
6°
14
17°
9°
15
18°
10°
16
19°
-5°
17
23°
4°
18
21°
-6°
19
8°
-9°
20
8°
-8°
21
9°
-13°
22
7°
-11°
23
7°
-14°
24
6°
-6°
25
9°
-13°
26
7°
-14°
27
8°
1°
28
14°
0°
29
11°
-3°
30
8°
-6°
31
9°
0°

Temperature Graph

°F
40° 28° 16° 4° -8° Jan
Today 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo

Further Ahead

February 2026

March 2026

April 2026

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Weather Near Thunder Bay:

  • Duluth, MN
  • Marquette, MI
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