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September weather forecast in Concord

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

31 August, sun

	753 mmHg		65%
	4.5 m/s		+34

31 August, Sunday. day, 28°; night, 13°; clear

1 September, mon

	752 mmHg		64%
	4.4 m/s		+34

1 September, Monday. day, 28°; night, 13°; clear

2 September, tue

	753 mmHg		64%
	4.4 m/s		+34

2 September, Tuesday. day, 28°; night, 14°; clear

3 September, wed

	753 mmHg		64%
	4.5 m/s		+33

3 September, Wednesday. day, 28°; night, 13°; clear

4 September, thu

	753 mmHg		65%
	4.69 m/s		+33

4 September, Thursday. day, 28°; night, 13°; clear

5 September, fri

	753 mmHg		63%
	4.5 m/s		+35

5 September, Friday. day, 29°; night, 13°; clear

6 September, sat

	753 mmHg		60%
	4.1 m/s		+34

6 September, Saturday. day, 30°; night, 13°; clear

7 September, sun

	753 mmHg		61%
	4.3 m/s		+34

7 September, Sunday. day, 30°; night, 13°; clear

8 September, mon

	752 mmHg		63%
	4.5 m/s		+34

8 September, Monday. day, 29°; night, 13°; clear

9 September, tue

	752 mmHg		66%
	4.6 m/s		+34

9 September, Tuesday. day, 27°; night, 13°; clear

10 September, wed

	753 mmHg		68%
	4.5 m/s		+34

10 September, Wednesday. day, 27°; night, 13°; clear

11 September, thu

	754 mmHg		66%
	4.19 m/s		+31

11 September, Thursday. day, 28°; night, 13°; clear

12 September, fri

	753 mmHg		67%
	4.5 m/s		+30

12 September, Friday. day, 27°; night, 13°; partly cloudy

13 September, sat

	753 mmHg		67%
	4.6 m/s		+29

13 September, Saturday. day, 27°; night, 13°; partly cloudy

14 September, sun

	753 mmHg		70%
	4.6 m/s		+29

14 September, Sunday. day, 26°; night, 13°; partly cloudy

15 September, mon

	753 mmHg		71%
	4.9 m/s		+31

15 September, Monday. day, 25°; night, 13°; partly cloudy

16 September, tue

	754 mmHg		70%
	5 m/s		+31

16 September, Tuesday. day, 25°; night, 13°; clear

17 September, wed

	754 mmHg		68%
	4.9 m/s		+31

17 September, Wednesday. day, 26°; night, 13°; partly cloudy

18 September, thu

	753 mmHg		66%
	4.5 m/s		+31

18 September, Thursday. day, 27°; night, 14°; partly cloudy

19 September, fri

	753 mmHg		65%
	4.4 m/s		+31

19 September, Friday. day, 27°; night, 13°; clear

20 September, sat

	753 mmHg		63%
	4.19 m/s		+29

20 September, Saturday. day, 28°; night, 13°; clear

21 September, sun

	753 mmHg		62%
	4.19 m/s		+30

21 September, Sunday. day, 28°; night, 13°; clear

22 September, mon

	753 mmHg		66%
	4.1 m/s		+32

22 September, Monday. day, 27°; night, 12°; clear

23 September, tue

	754 mmHg		64%
	3.9 m/s		+32

23 September, Tuesday. day, 28°; night, 12°; clear

24 September, wed

	754 mmHg		63%
	3.9 m/s		+31

24 September, Wednesday. day, 28°; night, 12°; clear

25 September, thu

	754 mmHg		64%
	4.1 m/s		+33

25 September, Thursday. day, 28°; night, 13°; clear

26 September, fri

	754 mmHg		64%
	4 m/s		+34

26 September, Friday. day, 28°; night, 13°; clear

27 September, sat

	754 mmHg		63%
	4.1 m/s		+33

27 September, Saturday. day, 28°; night, 13°; clear

28 September, sun

	753 mmHg		63%
	4.4 m/s		+30

28 September, Sunday. day, 27°; night, 13°; clear

29 September, mon

	754 mmHg		65%
	4.5 m/s		+28

29 September, Monday. day, 26°; night, 12°; clear

30 September, tue

	754 mmHg		67%
	4.19 m/s		+29

30 September, Tuesday. day, 26°; night, 12°; clear

1 October, wed

	754 mmHg		62%
	4 m/s		+30

1 October, Wednesday. day, 26°; night, 13°; clear

2 October, thu

	754 mmHg		60%
	4 m/s		+27

2 October, Thursday. day, 26°; night, 13°; clear

3 October, fri

	754 mmHg		63%
	4.3 m/s		+26

3 October, Friday. day, 26°; night, 12°; clear

4 October, sat

	754 mmHg		61%
	4.6 m/s		+26

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

Average data for 10 years

Concord September

24

sunny days

0

days with precipitation

6

cloudy days

24 sunny days; 0 days with precipitation; 6 cloudy days;

65

%

air humidity

2.6

m/s

WindSW

3

mm of precipitation

(1% of annual average)

+32

°C

Water temperature

air humidity 65%; 3 millimeters of precipitation (1% of annual average); Wind south-westerly 2.6 Meters per second; Water temperature +32°

Weather graphs for September

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

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

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

San Francisco
Sacramento
Oakland
Redding
Monterey
San Jose
Reno
Stanford
San Luis Obispo

Cities with similar weather in September

Varna
Podgorica
The Golden Sands
Genoa
Marseilles
Seattle
Lima
Brisbane
Albena

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

September in Concord is the warmest month of the year. In September, the weather in Concord is typically hot. Average daily high temperature in September is about 27 degrees above zero. On average, Concord has 24 sunny and 6 partly cloudy days in September. September as well as May, June, July, and August is considered the most comfortable time to visit Concord.

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