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October weather forecast in Portland

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

	756 mmHg		82%
	4.1 m/s		+17

28 September, Sunday. day, 19°; night, 12°; rain

29 September, mon

	756 mmHg		78%
	4.6 m/s		+16

29 September, Monday. day, 18°; night, 11°; rain

30 September, tue

	757 mmHg		77%
	4.4 m/s		+16

30 September, Tuesday. day, 17°; night, 10°; partly cloudy

1 October, wed

	757 mmHg		80%
	4.3 m/s		+16

1 October, Wednesday. day, 17°; night, 10°; rain

2 October, thu

	757 mmHg		78%
	4.1 m/s		+15

2 October, Thursday. day, 17°; night, 10°; rain

3 October, fri

	758 mmHg		77%
	3.9 m/s		+15

3 October, Friday. day, 17°; night, 10°; clear

4 October, sat

	759 mmHg		80%
	4 m/s		+15

4 October, Saturday. day, 17°; night, 9°; overcast

5 October, sun

	758 mmHg		76%
	4.1 m/s		+15

5 October, Sunday. day, 17°; night, 10°; clear

6 October, mon

	759 mmHg		76%
	4.5 m/s		+15

6 October, Monday. day, 16°; night, 8°; clear

7 October, tue

	757 mmHg		78%
	4.4 m/s		+15

7 October, Tuesday. day, 17°; night, 9°; partly cloudy

8 October, wed

	757 mmHg		74%
	4.5 m/s		+14

8 October, Wednesday. day, 17°; night, 9°; clear

9 October, thu

	758 mmHg		76%
	4.69 m/s		+15

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

10 October, fri

	757 mmHg		75%
	4.4 m/s		+15

10 October, Friday. day, 17°; night, 9°; overcast

11 October, sat

	757 mmHg		74%
	4.4 m/s		+14

11 October, Saturday. day, 16°; night, 8°; partly cloudy

12 October, sun

	758 mmHg		74%
	4.4 m/s		+14

12 October, Sunday. day, 15°; night, 7°; clear

13 October, mon

	757 mmHg		78%
	4.1 m/s		+14

13 October, Monday. day, 15°; night, 8°; partly cloudy

14 October, tue

	755 mmHg		79%
	4.8 m/s		+14

14 October, Tuesday. day, 16°; night, 9°; partly cloudy

15 October, wed

	753 mmHg		77%
	5 m/s		+14

15 October, Wednesday. day, 15°; night, 8°; rain

16 October, thu

	753 mmHg		74%
	5.5 m/s		+14

16 October, Thursday. day, 14°; night, 8°; rain

17 October, fri

	753 mmHg		74%
	5 m/s		+13

17 October, Friday. day, 14°; night, 7°; clear

18 October, sat

	755 mmHg		72%
	4.6 m/s		+13

18 October, Saturday. day, 14°; night, 6°; clear

19 October, sun

	756 mmHg		73%
	4.69 m/s		+13

19 October, Sunday. day, 14°; night, 6°; clear

20 October, mon

	755 mmHg		73%
	4.9 m/s		+13

20 October, Monday. day, 15°; night, 7°; clear

21 October, tue

	754 mmHg		75%
	4.69 m/s		+13

21 October, Tuesday. day, 15°; night, 7°; rain

22 October, wed

	755 mmHg		75%
	5.2 m/s		+12

22 October, Wednesday. day, 13°; night, 7°; partly cloudy

23 October, thu

	756 mmHg		75%
	4.8 m/s		+13

23 October, Thursday. day, 12°; night, 5°; rain

24 October, fri

	756 mmHg		75%
	4.69 m/s		+13

24 October, Friday. day, 13°; night, 6°; partly cloudy

25 October, sat

	756 mmHg		74%
	4.8 m/s		+13

25 October, Saturday. day, 13°; night, 7°; clear

26 October, sun

	757 mmHg		75%
	4.6 m/s		+13

26 October, Sunday. day, 13°; night, 6°; clear

27 October, mon

	757 mmHg		77%
	4.9 m/s		+12

27 October, Monday. day, 12°; night, 6°; rain

28 October, tue

	756 mmHg		76%
	5.7 m/s		+12

28 October, Tuesday. day, 12°; night, 6°; rain

29 October, wed

	755 mmHg		75%
	5.2 m/s		+12

29 October, Wednesday. day, 11°; night, 4°; rain

30 October, thu

	755 mmHg		73%
	5.4 m/s		+12

30 October, Thursday. day, 11°; night, 4°; rain

31 October, fri

	756 mmHg		74%
	4.8 m/s		+12

31 October, Friday. day, 12°; night, 4°; partly cloudy

1 November, sat

	755 mmHg		72%
	4.9 m/s		+11

1 November, Saturday. day, 12°; night, 7°; overcast

Average data for 10 years

Portland October

11

sunny days

10

days with precipitation

8

cloudy days

11 sunny days; 10 days with precipitation; 8 cloudy days;

76

%

air humidity

3.2

m/s

WindSW

118

mm of precipitation

(11% of annual average)

+14

°C

Water temperature

air humidity 76%; 118 millimeters of precipitation (11% of annual average); Wind south-westerly 3.2 Meters per second; Water temperature +14°

Weather graphs for October

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

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S

S

S

S

S

SW

SW

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SW

S

S

S

S

S

SW

SW

SW

SW

S

SW

S

SW

SW

SW

SW

S

S

SW

SW

SW

1

Average data for 10 years

2

3

4

5

6

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9

10

11

12

13

14

15

16

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18

19

20

21

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27

28

29

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31

Daytime temperature

Night-time temperature

Cities near you

Boston
Montreal
Colchester
Quebec
Laval
Brookhaven
Lake George
Berlin
Albany

Cities with similar weather in October

Toronto
Looe
Bruges
Liverpool
Rijeka
Le Havre
Cleveland
Milwaukee
Cardiff

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

In October, the weather in Portland is typically warm. Average daily high temperature in October is about 15 degrees above zero. On average, Portland has 11 sunny, 10 rainy, 8 partly cloudy, and 2 cloudy days in October. The rains are usually heavy. October as well as January, February, March, and April is considered the most uncomfortable time to visit Portland.

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