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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

	758 mmHg		75%
	5.1 m/s		+23

Climate normal

5 August, Monday. day, 28°; night, 18°; thunderstorm with rain

6 August, tue

	760 mmHg		74%
	3.2 m/s		+21

Climate normal

6 August, Tuesday. day, 22°; night, 16°; light rain

7 August, wed

	759 mmHg		73%
	3.9 m/s		+21

Climate normal

7 August, Wednesday. day, 23°; night, 14°; light rain

8 August, thu

	764 mmHg		58%
	4 m/s		+21

Climate normal

8 August, Thursday. day, 23°; night, 17°; mostly clear

9 August, fri

	762 mmHg		87%
	4.3 m/s		+21

Climate normal

9 August, Friday. day, 20°; night, 20°; heavy rain

10 August, sat

	754 mmHg		84%
	5.7 m/s		+21

Climate normal

10 August, Saturday. day, 23°; night, 19°; thunderstorm with rain

11 August, sun

	755 mmHg		73%
	4.9 m/s		+21

Climate normal

11 August, Sunday. day, 26°; night, 18°; mostly clear

12 August, mon

	754 mmHg		77%
	4.3 m/s		+21

Climate normal

12 August, Monday. day, 23°; night, 17°; light rain

13 August, tue

	755 mmHg		69%
	4 m/s		+21

Climate normal

13 August, Tuesday. day, 24°; night, 17°; light rain

14 August, wed

	758 mmHg		64%
	2.7 m/s		+21

Climate normal

14 August, Wednesday. day, 25°; night, 17°; light rain

15 August, thu

	759 mmHg		62%
	4.8 m/s

Climate normal

15 August, Thursday. day, 26°; night, 18°; partly cloudy

16 August, fri

	758 mmHg		75%
	5.3 m/s

Climate normal

16 August, Friday. day, 25°; night, 18°; partly cloudy

17 August, sat

	757 mmHg		75%
	5.5 m/s

Climate normal

17 August, Saturday. day, 26°; night, 16°; partly cloudy

18 August, sun

	761 mmHg		96%
	3.9 m/s

Climate normal

18 August, Sunday. day, 22°; night, 18°; mostly clear

19 August, mon

	762 mmHg		95%
	5 m/s

Climate normal

19 August, Monday. day, 22°; night, 18°; mostly clear

20 August, tue

	761 mmHg		90%
	5.2 m/s

Climate normal

20 August, Tuesday. day, 22°; night, 18°; clear

21 August, wed

	759 mmHg		74%
	6 m/s

Climate normal

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

22 August, thu

	758 mmHg		78%
	3 m/s

Climate normal

22 August, Thursday. day, 27°; night, 22°; light rain

23 August, fri

	762 mmHg		79%
	4.8 m/s

Climate normal

23 August, Friday. day, 22°; night, 21°; mostly clear

24 August, sat

	755 mmHg		79%
	8.2 m/s

Climate normal

24 August, Saturday. day, 25°; night, 21°; partly cloudy

25 August, sun

	751 mmHg		95%
	4.9 m/s

Climate normal

25 August, Sunday. day, 24°; night, 19°; mostly clear

26 August, mon

	750 mmHg		89%
	2.7 m/s

Climate normal

26 August, Monday. day, 22°; night, 20°; clear

27 August, tue

	756 mmHg		88%
	7.3 m/s

Climate normal

27 August, Tuesday. day, 19°; night, 15°; clear

28 August, wed

	764 mmHg		92%
	6.2 m/s

Climate normal

28 August, Wednesday. day, 15°; night, 12°; clear

29 August, thu

	767 mmHg		89%
	5.3 m/s

Climate normal

29 August, Thursday. day, 18°; night, 15°; clear

30 August, fri

	764 mmHg		79%
	6.9 m/s

Climate normal

30 August, Friday. day, 20°; night, 17°; clear

31 August, sat

	760 mmHg		82%
	6.8 m/s

Climate normal

31 August, Saturday. day, 23°; night, 20°; clear

1 September, sun

	759 mmHg		85%
	3.8 m/s

Climate normal

1 September, Sunday. day, 23°; night, 19°; light rain

2 September, mon

	762 mmHg		85%
	4.1 m/s

Climate normal

2 September, Monday. day, 21°; night, 19°; clear

3 September, tue

	756 mmHg		81%
	9.5 m/s

Climate normal

3 September, Tuesday. day, 25°; night, 22°; mostly clear

Average data for 10 years

Next, the average data for 10 years

4 September, wed

	757 mmHg		74%
	6 m/s		+19

4 September, Wednesday. day, 21°; night, 17°; clear

5 September, thu

	759 mmHg		75%
	6.5 m/s		+18

5 September, Thursday. day, 20°; night, 17°; partly cloudy

6 September, fri

	757 mmHg		80%
	5.3 m/s		+18

6 September, Friday. day, 20°; night, 17°; clear

7 September, sat

	756 mmHg		77%
	5.5 m/s		+19

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

Average for 30 days

17

sunny days

9

days with precipitation

4

cloudy days

17 sunny days; 9 days with precipitation; 4 cloudy days;

80

%

air humidity

5

m/s

WindSW

80

mm of precipitation

(9% of annual average)

+21

°C

Water temperature

air humidity 80%; 80 millimeters of precipitation (9% of annual average); Wind south-westerly 5 Meters per second; Water temperature +21°

Forecast in graphs

TemperatureHumidity, %Wind, m/sPressure, mmHg

S

NE

S

SE

E

S

SW

SW

SW

SW

SW

SW

SW

SE

S

S

S

W

E

SW

NW

W

N

N

SW

S

SW

NW

E

SW

5

Average data for 10 years

6

7

8

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

Daytime temperature

Night-time temperature

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

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