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September weather forecast in Washington

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

1 September, sun

	747 mmHg		54%
	5 m/s

1 September, Sunday. day, 29°; night, 23°; clear

2 September, mon

	747 mmHg		54%
	4.9 m/s

2 September, Monday. day, 27°; night, 23°; clear

3 September, tue

	747 mmHg		55%
	4.5 m/s

3 September, Tuesday. day, 28°; night, 23°; clear

4 September, wed

	747 mmHg		50%
	5.5 m/s

4 September, Wednesday. day, 27°; night, 22°; partly cloudy

5 September, thu

	748 mmHg		55%
	5 m/s

5 September, Thursday. day, 25°; night, 21°; clear

6 September, fri

	748 mmHg		52%
	5 m/s

6 September, Friday. day, 27°; night, 20°; clear

7 September, sat

	748 mmHg		50%
	4.3 m/s

7 September, Saturday. day, 27°; night, 21°; clear

8 September, sun

	747 mmHg		58%
	4.5 m/s

8 September, Sunday. day, 26°; night, 21°; clear

9 September, mon

	747 mmHg		64%
	4.6 m/s

9 September, Monday. day, 25°; night, 20°; clear

10 September, tue

	748 mmHg		64%
	5.1 m/s

10 September, Tuesday. day, 24°; night, 20°; partly cloudy

11 September, wed

	749 mmHg		56%
	5.9 m/s

11 September, Wednesday. day, 24°; night, 19°; partly cloudy

12 September, thu

	748 mmHg		55%
	4.9 m/s

12 September, Thursday. day, 24°; night, 19°; clear

13 September, fri

	749 mmHg		51%
	4.6 m/s

13 September, Friday. day, 25°; night, 18°; clear

14 September, sat

	749 mmHg		51%
	5 m/s

14 September, Saturday. day, 25°; night, 19°; partly cloudy

15 September, sun

	750 mmHg		56%
	5 m/s

15 September, Sunday. day, 23°; night, 19°; clear

16 September, mon

	750 mmHg		52%
	4.9 m/s

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

17 September, tue

	748 mmHg		62%
	4.3 m/s

17 September, Tuesday. day, 25°; night, 19°; partly cloudy

18 September, wed

	748 mmHg		62%
	5 m/s

18 September, Wednesday. day, 24°; night, 20°; partly cloudy

19 September, thu

	748 mmHg		61%
	4.5 m/s

19 September, Thursday. day, 25°; night, 20°; rain

20 September, fri

	747 mmHg		52%
	4.6 m/s

20 September, Friday. day, 26°; night, 21°; clear

21 September, sat

	749 mmHg		50%
	4.6 m/s

21 September, Saturday. day, 25°; night, 20°; clear

22 September, sun

	750 mmHg		50%
	4.9 m/s

22 September, Sunday. day, 25°; night, 19°; rain

23 September, mon

	750 mmHg		54%
	4.6 m/s

23 September, Monday. day, 24°; night, 20°; partly cloudy

24 September, tue

	749 mmHg		51%
	4.6 m/s

24 September, Tuesday. day, 24°; night, 20°; clear

25 September, wed

	748 mmHg		56%
	4.4 m/s

25 September, Wednesday. day, 24°; night, 19°; clear

26 September, thu

	747 mmHg		58%
	5 m/s

26 September, Thursday. day, 23°; night, 19°; clear

27 September, fri

	746 mmHg		54%
	5.1 m/s

27 September, Friday. day, 23°; night, 18°; clear

28 September, sat

	746 mmHg		55%
	4.9 m/s

28 September, Saturday. day, 22°; night, 18°; clear

29 September, sun

	747 mmHg		60%
	5.5 m/s

29 September, Sunday. day, 21°; night, 17°; rain

30 September, mon

	748 mmHg		62%
	6.6 m/s

30 September, Monday. day, 20°; night, 15°; clear

1 October, tue

	747 mmHg		62%
	6.1 m/s

1 October, Tuesday. day, 19°; night, 15°; partly cloudy

2 October, wed

	747 mmHg		64%
	5.8 m/s

2 October, Wednesday. day, 19°; night, 15°; partly cloudy

3 October, thu

	749 mmHg		60%
	5 m/s

3 October, Thursday. day, 20°; night, 14°; clear

4 October, fri

	749 mmHg		58%
	4.5 m/s

4 October, Friday. day, 22°; night, 15°; clear

5 October, sat

	747 mmHg		58%
	6.4 m/s

5 October, Saturday. day, 22°; night, 17°; rain

Average data for 10 years

Washington September

19

sunny days

3

days with precipitation

8

cloudy days

19 sunny days; 3 days with precipitation; 8 cloudy days;

56

%

air humidity

3.7

m/s

WindN

49

mm of precipitation

(6% of annual average)

air humidity 56%; 49 millimeters of precipitation (6% of annual average); Wind northerly 3.7 Meters per second

Weather graphs for September

TemperaturePrecipitation chance, %Humidity, %Wind, m/sPressure, mmHg

N

N

N

N

NE

NW

NW

NE

NE

N

N

NW

SE

E

NE

NE

E

N

E

W

NE

NE

NE

NE

NE

N

NW

NW

N

N

1

Average data for 10 years

2

3

4

5

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

Daytime temperature

Night-time temperature

Cities near you

Chicago
Indianapolis
Nashville
Cincinnati
St. Louis
Louisville
Lexington
Michigan City
Springfield

Cities with similar weather in September

Rome
Baku
Budva
Madrid
Venice
Beijing
Dushanbe
Thessaloniki
Samarkand

The weather forecast for September 2024 is based on historical data from the past 10 years.

In September, the weather in Washington is typically warm. Average daily high temperature in September is about 25 degrees above zero. On average, Washington has 19 sunny, 8 partly cloudy, and 3 rainy days in September. The rains are usually light. September as well as {{month_nom: February}}, and {{month_nom: February}} is considered the most comfortable time to visit Washington.

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