Thunder Bay weather live forecast

Today's maximum temperature in Thunder Bay is expected to be 22°C. Select a day from the live weather forecast for Thunder Bay, Ontario, Canada for more weather parameters.

Tuesday
2nd Jun
22

7

14

7
Wednesday
3rd Jun
26

7

9

7
Thursday
4th Jun
23

10

6

6
Friday
5th Jun
19

9

9

3
Saturday
6th Jun
18

8

8

2

5-day weather forecast updated at 04:00 on Tuesday 2nd June 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 Tuesday 2nd June 2026

Expect clear skies in Thunder Bay, Ontario with a maximum temperature of 22°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 south-east.

22
°C maximum temperature
7
°C minimum temperature
clear skies
14
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
12
kph wind from SE

Thunder Bay weather for Wednesday 3rd June 2026

Expect scattered clouds in Thunder Bay, Ontario with a maximum temperature of 26°C, maximum UV of 7 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the south.

26
°C maximum temperature
7
°C minimum temperature
scattered clouds
9
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
26
°C wind chill
20
kph wind from S

Thunder Bay weather for Thursday 4th June 2026

Expect mostly cloudy with rain in Thunder Bay, Ontario with a maximum temperature of 23°C, maximum UV of 6 (High) and 6 hours of bright sunshine. There are 5-10 mm of rainfall expected with 71% chance of some rain and a gentle breeze of 13 kph from the south.

23
°C maximum temperature
10
°C minimum temperature
mostly cloudy with rain
6
hours of sunshine
6
UV index (High)
71
% chance of some rain
<10
mm of rainfall expected
23
°C wind chill
13
kph wind from S

Thunder Bay weather for Friday 5th June 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 19°C, maximum UV of 3 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the south-east.

19
°C maximum temperature
9
°C minimum temperature
broken clouds
9
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
11
kph wind from SE

Thunder Bay weather for Saturday 6th June 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 18°C, maximum UV of 2 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the east.

18
°C maximum temperature
8
°C minimum temperature
broken clouds
8
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
12
kph wind from E

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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