Thunder Bay weather live forecast

Today's maximum temperature in Thunder Bay is expected to be 15°C. Select a day from the live weather forecast for Thunder Bay, Ontario, Canada for more weather parameters.

Sunday
4th Oct
15

6

9

3
Monday
5th Oct
13

1

7

3
Tuesday
6th Oct
19

5

2

2
Wednesday
7th Oct
17

8

7

3
Thursday
8th Oct
16

3

3

2

5-day weather forecast updated at 04:00 on Sunday 4th October 2026 GMT

More about Thunder Bay

Thunder Bay by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Ontario

Canadian Affair: Latest special offers on holidays

Sale

Save on holidays to Canada with top deals & discounts
Book holidays, cruises, ski breaks & tours to Canada
Offers include discounts, upgrades & more

Go to Canadian Affair deal >>

View all Canadian Affair offers

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 Sunday 4th October 2026

Expect sunshine and showers in Thunder Bay, Ontario with a maximum temperature of 15°C, maximum UV of 3 (Moderate) and 9 hours of bright sunshine. There are 0-2 mm of rainfall expected with 3% chance of some rain and a moderate breeze of 25 kph from the north-west.

15
°C maximum temperature
6
°C minimum temperature
sunshine and showers
9
hours of sunshine
3
UV index (Moderate)
3
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
25
kph wind from NW

Thunder Bay weather for Monday 5th October 2026

Expect scattered clouds in Thunder Bay, Ontario with a maximum temperature of 13°C, maximum UV of 3 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the north-west.

13
°C maximum temperature
1
°C minimum temperature
scattered clouds
7
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
15
kph wind from NW

Thunder Bay weather for Tuesday 6th October 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 19°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the west.

19
°C maximum temperature
5
°C minimum temperature
broken clouds
2
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
19
°C wind chill
19
kph wind from W

Thunder Bay weather for Wednesday 7th October 2026

Expect scattered clouds in Thunder Bay, Ontario with a maximum temperature of 17°C, maximum UV of 3 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 22 kph from the north-west.

17
°C maximum temperature
8
°C minimum temperature
scattered clouds
7
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
22
kph wind from NW

Thunder Bay weather for Thursday 8th October 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 16°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the west.

16
°C maximum temperature
3
°C minimum temperature
broken clouds
3
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
16
°C wind chill
16
kph wind from W

Air Canada: Top flight deals to Canada

Sale

Discover top Air Canada offers on flights to Canada
Browse lowest fares available or search by date
Book flights to Toronto, Vancouver, Calgary, Montreal & more

Go to Air Canada deal >>

View all Air Canada offers

More about Ontario

Be inspired

Get your weekly fix of holiday inspiration from some of the world's best travel writers plus save on your next trip with the latest exclusive offers

We promise not to share your details

Popular travel offers

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