Thunder Bay weather live forecast

Today's maximum temperature in Thunder Bay is expected to be 17°C. Select a day from the live weather forecast for Thunder Bay, Ontario, Canada for more weather parameters.

Wednesday
7th Oct
17

6

5

3
Thursday
8th Oct
14

4

3

2
Friday
9th Oct
15

2

3

2
Saturday
10th Oct
16

7

6

2
Sunday
11th Oct
22

10

5

2

5-day weather forecast updated at 04:00 on Wednesday 7th October 2026 GMT

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The 5-day weather forecast for Ontario (Thunder Bay) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Thunder Bay weather forecast by day

Below are the detailed weather forecasts for Thunder Bay for the next 5 days.

Thunder Bay weather for Wednesday 7th October 2026

Expect sunshine and showers in Thunder Bay, Ontario with a maximum temperature of 17°C, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 59% chance of some rain and a moderate breeze of 21 kph from the west.

17
°C maximum temperature
6
°C minimum temperature
sunshine and showers
5
hours of sunshine
3
UV index (Moderate)
59
% chance of some rain
<2
mm of rainfall expected
17
°C wind chill
21
kph wind from W

Thunder Bay weather for Thursday 8th October 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 14°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the north-west.

14
°C maximum temperature
4
°C minimum temperature
broken clouds
3
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
14
°C wind chill
20
kph wind from NW

Thunder Bay weather for Friday 9th October 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 15°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the east.

15
°C maximum temperature
2
°C minimum temperature
broken clouds
3
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
11
kph wind from E

Thunder Bay weather for Saturday 10th October 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 16°C, maximum UV of 2 (Low) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the east.

16
°C maximum temperature
7
°C minimum temperature
broken clouds
6
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
20
kph wind from E

Thunder Bay weather for Sunday 11th October 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 22°C, maximum UV of 2 (Low) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the west.

22
°C maximum temperature
10
°C minimum temperature
broken clouds
5
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
14
kph wind from W

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Ontario - quick facts
Flight time^✝	8 hours
Time difference	UK -5 to -6 hours
Language(s)	English, French
Currency	Canadian Dollar
Electricity	A + B plug (120V)
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