Thunder Bay weather live forecast

Today's maximum temperature in Thunder Bay is expected to be 24°C. Select a day from the live weather forecast for Thunder Bay, Ontario, Canada for more weather parameters.

Tuesday
26th May
24

11

14

7
Wednesday
27th May
19

9

11

6
Thursday
28th May
19

6

13

7
Friday
29th May
20

8

13

6
Saturday
30th May
18

8

7

7

5-day weather forecast updated at 04:00 on Tuesday 26th May 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 Tuesday 26th May 2026

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

24
°C maximum temperature
11
°C minimum temperature
scattered clouds
14
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
24
°C wind chill
14
kph wind from NW

Thunder Bay weather for Wednesday 27th May 2026

Expect scattered clouds in Thunder Bay, Ontario with a maximum temperature of 19°C, maximum UV of 6 (High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the north-east.

19
°C maximum temperature
9
°C minimum temperature
scattered clouds
11
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
16
kph wind from NE

Thunder Bay weather for Thursday 28th May 2026

Expect scattered clouds in Thunder Bay, Ontario with a maximum temperature of 19°C, maximum UV of 7 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the south-east.

19
°C maximum temperature
6
°C minimum temperature
scattered clouds
13
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 Friday 29th May 2026

Expect scattered clouds in Thunder Bay, Ontario with a maximum temperature of 20°C, maximum UV of 6 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the east.

20
°C maximum temperature
8
°C minimum temperature
scattered clouds
13
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
11
kph wind from E

Thunder Bay weather for Saturday 30th May 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 18°C, maximum UV of 7 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the east.

18
°C maximum temperature
8
°C minimum temperature
broken clouds
7
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
13
kph wind from E

Hurtigruten: Latest offers on worldwide cruises

Sale

Explore latest special offers on Hurtigruten Expeditions
Includes online discount, no single supplement & more
Browse top online deals & destination specific offers

Go to Hurtigruten deal >>

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