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Monthly 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

25 August, sun

	765 mmHg		73%
	3.2 m/s		+21

Climate normal

25 August, Sunday. day, 25°; night, 17°; partly cloudy

26 August, mon

	763 mmHg		83%
	3 m/s		+21

Climate normal

26 August, Monday. day, 23°; night, 16°; light rain

27 August, tue

	761 mmHg		81%
	4.3 m/s		+21

Climate normal

27 August, Tuesday. day, 24°; night, 19°; partly cloudy

28 August, wed

	757 mmHg		76%
	4 m/s		+21

Climate normal

28 August, Wednesday. day, 26°; night, 14°; light rain

29 August, thu

	764 mmHg		57%
	3.6 m/s		+21

Climate normal

29 August, Thursday. day, 21°; night, 12°; partly cloudy

30 August, fri

	765 mmHg		62%
	4.5 m/s		+21

Climate normal

30 August, Friday. day, 21°; night, 16°; partly cloudy

31 August, sat

	759 mmHg		75%
	4.4 m/s		+21

Climate normal

31 August, Saturday. day, 22°; night, 17°; heavy rain

1 September, sun

	758 mmHg		74%
	4.2 m/s		+21

Climate normal

1 September, Sunday. day, 24°; night, 17°; light rain

2 September, mon

	759 mmHg		62%
	5.3 m/s		+22

Climate normal

2 September, Monday. day, 24°; night, 14°; light rain

3 September, tue

	763 mmHg		56%
	4.2 m/s		+22

Climate normal

3 September, Tuesday. day, 22°; night, 15°; partly cloudy

4 September, wed

	761 mmHg		71%
	6.3 m/s

Climate normal

4 September, Wednesday. day, 21°; night, 15°; partly cloudy

5 September, thu

	761 mmHg		69%
	5.3 m/s

Climate normal

5 September, Thursday. day, 22°; night, 15°; partly cloudy

6 September, fri

	764 mmHg		67%
	5.7 m/s

Climate normal

6 September, Friday. day, 20°; night, 10°; mostly clear

7 September, sat

	766 mmHg		76%
	4.8 m/s

Climate normal

7 September, Saturday. day, 16°; night, 9°; clear

8 September, sun

	765 mmHg		82%
	3 m/s

Climate normal

8 September, Sunday. day, 17°; night, 10°; mostly clear

9 September, mon

	765 mmHg		83%
	3.4 m/s

Climate normal

9 September, Monday. day, 17°; night, 10°; mostly clear

10 September, tue

	765 mmHg		79%
	2.7 m/s

Climate normal

10 September, Tuesday. day, 18°; night, 13°; clear

11 September, wed

	765 mmHg		78%
	3.6 m/s

Climate normal

11 September, Wednesday. day, 18°; night, 13°; clear

12 September, thu

	765 mmHg		80%
	5.3 m/s

Climate normal

12 September, Thursday. day, 18°; night, 15°; clear

13 September, fri

	764 mmHg		89%
	4.2 m/s

Climate normal

13 September, Friday. day, 18°; night, 17°; mostly clear

14 September, sat

	762 mmHg		88%
	4.1 m/s

Climate normal

14 September, Saturday. day, 21°; night, 18°; mostly clear

15 September, sun

	759 mmHg		78%
	5.4 m/s

Climate normal

15 September, Sunday. day, 24°; night, 20°; clear

16 September, mon

	756 mmHg		82%
	4.3 m/s

Climate normal

16 September, Monday. day, 24°; night, 18°; partly cloudy

17 September, tue

	759 mmHg		69%
	8.2 m/s

Climate normal

17 September, Tuesday. day, 17°; night, 14°; clear

18 September, wed

	764 mmHg		75%
	6.6 m/s

Climate normal

18 September, Wednesday. day, 16°; night, 10°; clear

19 September, thu

	764 mmHg		79%
	4.1 m/s

Climate normal

19 September, Thursday. day, 17°; night, 14°; clear

20 September, fri

	758 mmHg		91%
	6 m/s

Climate normal

20 September, Friday. day, 15°; night, 13°; rain

21 September, sat

	754 mmHg		74%
	12.5 m/s

Climate normal

21 September, Saturday. day, 15°; night, 11°; light rain

22 September, sun

	754 mmHg		70%
	11.3 m/s

Climate normal

22 September, Sunday. day, 13°; night, 11°; partly cloudy

23 September, mon

	755 mmHg		71%
	7.8 m/s

Climate normal

23 September, Monday. day, 15°; night, 11°; clear

Average data for 10 years

Next, the average data for 10 years

24 September, tue

	761 mmHg		68%
	5 m/s		+17

24 September, Tuesday. day, 17°; night, 15°; partly cloudy

25 September, wed

	762 mmHg		69%
	5.5 m/s		+16

25 September, Wednesday. day, 17°; night, 13°; clear

26 September, thu

	760 mmHg		79%
	6.4 m/s		+17

26 September, Thursday. day, 18°; night, 14°; clear

27 September, fri

	757 mmHg		80%
	6.3 m/s		+17

27 September, Friday. day, 19°; night, 16°; rain

28 September, sat

	756 mmHg		81%
	6 m/s		+17

28 September, Saturday. day, 16°; night, 15°; rain

Average for 30 days

15

sunny days

6

days with precipitation

9

cloudy days

15 sunny days; 6 days with precipitation; 9 cloudy days;

75

%

air humidity

5.2

m/s

WindS

21

mm of precipitation

(3% of annual average)

+21

°C

Water temperature

air humidity 75%; 21 millimeters of precipitation (3% of annual average); Wind southerly 5.2 Meters per second; Water temperature +21°

Forecast in graphs

TemperatureHumidity, %Wind, m/sPressure, mmHg

SE

SE

S

SW

E

S

S

SW

W

W

S

SW

SW

E

E

E

S

S

S

SW

SW

SW

NW

NE

NE

SE

S

NW

NW

NW

25

Average data for 10 years

26

27

28

29

30

31

1

September

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

Daytime temperature

Night-time temperature

Weather forecast for the month based on historical data from the last 10 years.

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