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October weather forecast in Thunder Bay

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

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

Sun

Sunday

Mon

Monday

Tue

Tuesday

Wed

Wednesday

Thu

Thursday

Fri

Friday

Sat

Saturday

28 September, sun

	729 mmHg		79%
	4.6 m/s		+11

28 September, Sunday. day, 15°; night, 6°; clear

29 September, mon

	730 mmHg		79%
	4.9 m/s		+11

29 September, Monday. day, 14°; night, 5°; rain

30 September, tue

	729 mmHg		80%
	4.6 m/s		+11

30 September, Tuesday. day, 14°; night, 5°; rain

1 October, wed

	730 mmHg		80%
	4.8 m/s		+11

1 October, Wednesday. day, 13°; night, 5°; clear

2 October, thu

	730 mmHg		77%
	5 m/s		+11

2 October, Thursday. day, 13°; night, 5°; clear

3 October, fri

	730 mmHg		79%
	4.69 m/s		+11

3 October, Friday. day, 13°; night, 5°; rain

4 October, sat

	731 mmHg		76%
	4.8 m/s		+11

4 October, Saturday. day, 13°; night, 4°; clear

5 October, sun

	730 mmHg		79%
	5 m/s		+10

5 October, Sunday. day, 12°; night, 4°; rain

6 October, mon

	729 mmHg		79%
	5.5 m/s		+11

6 October, Monday. day, 11°; night, 4°; rain

7 October, tue

	730 mmHg		77%
	5 m/s		+10

7 October, Tuesday. day, 12°; night, 3°; partly cloudy

8 October, wed

	729 mmHg		77%
	4.69 m/s		+10

8 October, Wednesday. day, 13°; night, 4°; clear

9 October, thu

	729 mmHg		77%
	5 m/s		+10

9 October, Thursday. day, 13°; night, 5°; partly cloudy

10 October, fri

	730 mmHg		78%
	5 m/s		+10

10 October, Friday. day, 13°; night, 3°; clear

11 October, sat

	729 mmHg		79%
	5.2 m/s		+10

11 October, Saturday. day, 13°; night, 4°; partly cloudy

12 October, sun

	727 mmHg		80%
	4.8 m/s		+10

12 October, Sunday. day, 13°; night, 5°; rain

13 October, mon

	726 mmHg		81%
	5 m/s		+10

13 October, Monday. day, 10°; night, 4°; rain

14 October, tue

	727 mmHg		80%
	5.3 m/s		+9

14 October, Tuesday. day, 8°; night, 2°; rain

15 October, wed

	727 mmHg		78%
	5 m/s		+9

15 October, Wednesday. day, 8°; night, 2°; overcast

16 October, thu

	729 mmHg		76%
	4.8 m/s		+9

16 October, Thursday. day, 8°; night, 1°; partly cloudy

17 October, fri

	727 mmHg		78%
	4.8 m/s		+9

17 October, Friday. day, 8°; night, 1°; rain

18 October, sat

	727 mmHg		77%
	5.3 m/s		+9

18 October, Saturday. day, 10°; night, 1°; overcast

19 October, sun

	726 mmHg		78%
	4.8 m/s		+8

19 October, Sunday. day, 9°; night, 3°; rain

20 October, mon

	727 mmHg		78%
	4.6 m/s		+8

20 October, Monday. day, 8°; night, 1°; partly cloudy

21 October, tue

	729 mmHg		80%
	4.69 m/s		+8

21 October, Tuesday. day, 7°; night, 0°; overcast

22 October, wed

	729 mmHg		80%
	4.5 m/s		+8

22 October, Wednesday. day, 8°; night, 1°; partly cloudy

23 October, thu

	729 mmHg		81%
	4.69 m/s		+8

23 October, Thursday. day, 7°; night, 1°; rain

24 October, fri

	728 mmHg		80%
	4.8 m/s		+8

24 October, Friday. day, 7°; night, 1°; partly cloudy

25 October, sat

	729 mmHg		81%
	4.6 m/s		+8

25 October, Saturday. day, 6°; night, 0°; overcast

26 October, sun

	729 mmHg		81%
	4.9 m/s		+7

26 October, Sunday. day, 6°; night, 0°; rain

27 October, mon

	729 mmHg		81%
	4.9 m/s		+7

27 October, Monday. day, 5°; night, 0°; overcast

28 October, tue

	729 mmHg		79%
	4.8 m/s		+7

28 October, Tuesday. day, 5°; night, 0°; partly cloudy

29 October, wed

	729 mmHg		80%
	4.4 m/s		+6

29 October, Wednesday. day, 6°; night, 0°; overcast

30 October, thu

	728 mmHg		81%
	4.6 m/s		+6

30 October, Thursday. day, 6°; night, 0°; rain

31 October, fri

	727 mmHg		80%
	5.2 m/s		+6

31 October, Friday. day, 5°; night, 0°; overcast

1 November, sat

	728 mmHg		77%
	5 m/s		+6

1 November, Saturday. day, 5°; night, -1°; clear

Average data for 10 years

Thunder Bay October

5

sunny days

11

days with precipitation

13

cloudy days

5 sunny days; 11 days with precipitation; 13 cloudy days;

79

%

air humidity

3.4

m/s

WindSW

74

mm of precipitation

(11% of annual average)

+9

°C

Water temperature

air humidity 79%; 74 millimeters of precipitation (11% of annual average); Wind south-westerly 3.4 Meters per second; Water temperature +9°

Weather graphs for October

TemperatureWater temperaturePrecipitation chance, %Humidity, %Wind, m/sPressure, mmHg

SW

SW

S

SW

S

SW

SW

SW

SW

SW

S

SW

SW

SW

SW

SW

SW

SW

SW

SW

S

SW

SW

SW

SW

SW

S

SW

SW

S

SW

1

Average data for 10 years

2

3

4

5

6

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8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

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27

28

29

30

31

Daytime temperature

Night-time temperature

Cities near you

Duluth
Hayward
Dryden
Minocqua
Cloquet
Spooner
Marshfield
Stevens Point
Ashland

Cities with similar weather in October

Helsinki
Riga
Tallinn
Stockholm
Cholpon-Ata
Oslo
Yurmala
Palanga
Dublin

The weather forecast for October 2025 is based on historical data from the past 10 years.

In October, the weather in Thunder Bay is typically cold. Average daily high temperature in October is about 9 degrees above zero. On average, Thunder Bay has 9 rainy, 9 cloudy, 8 partly cloudy, and 5 sunny days in October. The rains are usually heavy. October as well as January, March, April, and November is considered the most uncomfortable time to visit Thunder Bay.

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