Thunder Bay weather live forecast

Today's maximum temperature in Thunder Bay is expected to be 23°C. Select a day from the live weather forecast for Thunder Bay, Ontario, Canada for more weather parameters.

Saturday
4th Jul
23

15

8

7
Sunday
5th Jul
23

14

14

7
Monday
6th Jul
24

12

13

7
Tuesday
7th Jul
28

13

14

6
Wednesday
8th Jul
25

15

4

1

5-day weather forecast updated at 04:00 on Saturday 4th July 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 Saturday 4th July 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 23°C, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the north-east.

23
°C maximum temperature
15
°C minimum temperature
broken clouds
8
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
12
kph wind from NE

Thunder Bay weather for Sunday 5th July 2026

Expect scattered clouds in Thunder Bay, Ontario with a maximum temperature of 23°C, maximum UV of 7 (High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the east.

23
°C maximum temperature
14
°C minimum temperature
scattered clouds
14
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
23
°C wind chill
12
kph wind from E

Thunder Bay weather for Monday 6th July 2026

Expect scattered clouds in Thunder Bay, Ontario with a maximum temperature of 24°C, maximum UV of 7 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the south-east.

24
°C maximum temperature
12
°C minimum temperature
scattered clouds
13
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
14
kph wind from SE

Thunder Bay weather for Tuesday 7th July 2026

Expect scattered clouds in Thunder Bay, Ontario with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 6 (High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the west.

28
°C maximum temperature
13
°C minimum temperature
scattered clouds
14
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
11
kph wind from W

Thunder Bay weather for Wednesday 8th July 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 25°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the south-east.

25
°C maximum temperature
15
°C minimum temperature
broken clouds
4
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
25
°C wind chill
10
kph wind from SE

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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)
Driving side	Right
Visa^✝	Yes