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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

4 August, sun

	755 mmHg		81%
	4.6 m/s		+20

4 August, Sunday. day, 22°; night, 19°; clear

5 August, mon

	755 mmHg		75%
	5.5 m/s		+20

5 August, Monday. day, 22°; night, 18°; partly cloudy

6 August, tue

	755 mmHg		75%
	5 m/s		+20

6 August, Tuesday. day, 21°; night, 18°; partly cloudy

7 August, wed

	755 mmHg		76%
	4.9 m/s		+20

7 August, Wednesday. day, 21°; night, 17°; rain

8 August, thu

	765 mmHg		74%
	4.1 m/s		+20

Climate normal

8 August, Thursday. day, 23°; night, 18°; light rain

9 August, fri

	761 mmHg		92%
	7.8 m/s		+20

Climate normal

9 August, Friday. day, 22°; night, 21°; rain

10 August, sat

	754 mmHg		68%
	6.4 m/s		+19

Climate normal

10 August, Saturday. day, 29°; night, 16°; heavy rain

11 August, sun

	758 mmHg		54%
	5.5 m/s		+20

Climate normal

11 August, Sunday. day, 26°; night, 16°; mostly clear

12 August, mon

	756 mmHg		64%
	4 m/s		+19

Climate normal

12 August, Monday. day, 23°; night, 15°; light rain

13 August, tue

	757 mmHg		60%
	3.2 m/s		+20

Climate normal

13 August, Tuesday. day, 26°; night, 17°; light rain

14 August, wed

	759 mmHg		61%
	3.3 m/s		+20

Climate normal

14 August, Wednesday. day, 26°; night, 17°; partly cloudy

15 August, thu

	760 mmHg		73%
	4.1 m/s		+20

Climate normal

15 August, Thursday. day, 25°; night, 17°; partly cloudy

16 August, fri

	761 mmHg		69%
	4.2 m/s		+21

Climate normal

16 August, Friday. day, 25°; night, 18°; light rain

17 August, sat

	761 mmHg		69%
	4.5 m/s		+21

Climate normal

17 August, Saturday. day, 24°; night, 17°; partly cloudy

18 August, sun

	759 mmHg		71%
	4.6 m/s

Climate normal

18 August, Sunday. day, 25°; night, 18°; partly cloudy

19 August, mon

	758 mmHg		75%
	4.8 m/s

Climate normal

19 August, Monday. day, 24°; night, 17°; partly cloudy

20 August, tue

	757 mmHg		71%
	5.4 m/s

Climate normal

20 August, Tuesday. day, 25°; night, 22°; partly cloudy

21 August, wed

	755 mmHg		85%
	3.4 m/s

Climate normal

21 August, Wednesday. day, 24°; night, 20°; clear

22 August, thu

	759 mmHg		73%
	5.9 m/s

Climate normal

22 August, Thursday. day, 20°; night, 16°; clear

23 August, fri

	761 mmHg		74%
	5.6 m/s

Climate normal

23 August, Friday. day, 20°; night, 18°; clear

24 August, sat

	760 mmHg		69%
	5.6 m/s

Climate normal

24 August, Saturday. day, 21°; night, 19°; partly cloudy

25 August, sun

	756 mmHg		93%
	9 m/s

Climate normal

25 August, Sunday. day, 22°; night, 21°; rain

26 August, mon

	756 mmHg		94%
	6.7 m/s

Climate normal

26 August, Monday. day, 23°; night, 20°; rain

27 August, tue

	755 mmHg		92%
	2 m/s

Climate normal

27 August, Tuesday. day, 22°; night, 20°; rain

28 August, wed

	756 mmHg		80%
	5.7 m/s

Climate normal

28 August, Wednesday. day, 22°; night, 20°; mostly clear

29 August, thu

	762 mmHg		80%
	4.1 m/s

Climate normal

29 August, Thursday. day, 20°; night, 18°; mostly clear

30 August, fri

	763 mmHg		77%
	2.9 m/s

Climate normal

30 August, Friday. day, 21°; night, 16°; clear

31 August, sat

	760 mmHg		80%
	3.3 m/s

Climate normal

31 August, Saturday. day, 21°; night, 17°; clear

1 September, sun

	761 mmHg		75%
	3.1 m/s

Climate normal

1 September, Sunday. day, 23°; night, 18°; clear

2 September, mon

	761 mmHg		74%
	5 m/s

Climate normal

2 September, Monday. day, 23°; night, 19°; clear

3 September, tue

	760 mmHg		74%
	4.4 m/s

Climate normal

3 September, Tuesday. day, 24°; night, 23°; clear

4 September, wed

	758 mmHg		73%
	4.8 m/s

Climate normal

4 September, Wednesday. day, 26°; night, 21°; partly cloudy

5 September, thu

	758 mmHg		86%
	2.7 m/s

Climate normal

5 September, Thursday. day, 24°; night, 21°; clear

6 September, fri

	757 mmHg		79%
	5 m/s

Climate normal

6 September, Friday. day, 26°; night, 22°; mostly clear

Average data for 10 years

Next, the average data for 10 years

7 September, sat

	756 mmHg		77%
	5.5 m/s		+19

7 September, Saturday. day, 20°; night, 17°; partly cloudy

Average for 30 days

14

sunny days

8

days with precipitation

8

cloudy days

14 sunny days; 8 days with precipitation; 8 cloudy days;

75

%

air humidity

4.7

m/s

WindS

28

mm of precipitation

(3% of annual average)

+20

°C

Water temperature

air humidity 75%; 28 millimeters of precipitation (3% of annual average); Wind southerly 4.7 Meters per second; Water temperature +20°

Forecast in graphs

TemperatureHumidity, %Wind, m/sPressure, mmHg

SE

SE

SW

SW

W

NW

N

S

S

S

S

W

W

NW

SE

S

S

S

S

N

N

S

S

SW

NW

SW

SW

SW

NW

SW

8

Average data for 10 years

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

1

September

2

3

4

5

6

Daytime temperature

Night-time temperature

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

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