Thunder Bay weather live forecast

Today's maximum temperature in Thunder Bay is expected to be 13°C. Select a day from the live weather forecast for Thunder Bay, Ontario, Canada for more weather parameters.

Wednesday
28th Oct
13

7

3

2
Thursday
29th Oct
10

3

1

1
Friday
30th Oct
9

0

5

2
Saturday
31st Oct
10

-3

4

2
Sunday
1st Nov
13

0

0

2

5-day weather forecast updated at 04:00 on Wednesday 28th 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 28th October 2026

Expect mostly cloudy with rain in Thunder Bay, Ontario with a maximum temperature of 13°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 10-20 mm of rainfall expected with 100% chance of some rain and a light breeze of 10 kph from the south-west.

13
°C maximum temperature
7
°C minimum temperature
mostly cloudy with rain
3
hours of sunshine
2
UV index (Low)
100
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
10
kph wind from SW

Thunder Bay weather for Thursday 29th October 2026

Expect mostly cloudy with rain in Thunder Bay, Ontario with a maximum temperature of 10°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 19% chance of some rain and a moderate breeze of 24 kph from the west.

10
°C maximum temperature
3
°C minimum temperature
mostly cloudy with rain
1
hour of sunshine
1
UV index (Low)
19
% chance of some rain
<10
mm of rainfall expected
7
°C wind chill
24
kph wind from W

Thunder Bay weather for Friday 30th October 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 9°C, maximum UV of 2 (Low) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the west.

9
°C maximum temperature
0
°C minimum temperature
broken clouds
5
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
7
°C wind chill
15
kph wind from W

Thunder Bay weather for Saturday 31st October 2026

Expect scattered clouds in Thunder Bay, Ontario with a maximum temperature of 10°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the west.

10
°C maximum temperature
-3
°C minimum temperature
scattered clouds
4
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
9
°C wind chill
7
kph wind from W

Thunder Bay weather for Sunday 1st November 2026

Expect overcast skies in Thunder Bay, Ontario with a maximum temperature of 13°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the west.

13
°C maximum temperature
0
°C minimum temperature
overcast skies
0
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
7
kph wind from W

More about Ontario

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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