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September weather forecast in San Jose

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

	761 mmHg		75%
	6.4 m/s		+30

1 September, Sunday. day, 29°; night, 28°; clear

2 September, mon

	761 mmHg		75%
	7.3 m/s		+30

2 September, Monday. day, 29°; night, 28°; rain

3 September, tue

	761 mmHg		75%
	8.1 m/s		+30

3 September, Tuesday. day, 29°; night, 28°; rain

4 September, wed

	761 mmHg		74%
	7.6 m/s		+30

4 September, Wednesday. day, 29°; night, 28°; rain

5 September, thu

	762 mmHg		73%
	6.5 m/s		+30

5 September, Thursday. day, 29°; night, 28°; rain

6 September, fri

	762 mmHg		74%
	5.3 m/s		+30

6 September, Friday. day, 29°; night, 28°; rain

7 September, sat

	762 mmHg		75%
	5.3 m/s		+30

7 September, Saturday. day, 28°; night, 28°; rain

8 September, sun

	762 mmHg		76%
	6 m/s		+30

8 September, Sunday. day, 28°; night, 28°; rain

9 September, mon

	762 mmHg		75%
	5.9 m/s		+30

9 September, Monday. day, 28°; night, 28°; rain

10 September, tue

	761 mmHg		75%
	7.1 m/s		+30

10 September, Tuesday. day, 28°; night, 28°; clear

11 September, wed

	761 mmHg		75%
	8.3 m/s		+30

11 September, Wednesday. day, 29°; night, 28°; rain

12 September, thu

	761 mmHg		75%
	8.3 m/s		+30

12 September, Thursday. day, 29°; night, 28°; rain

13 September, fri

	761 mmHg		74%
	7.9 m/s		+30

13 September, Friday. day, 29°; night, 28°; overcast

14 September, sat

	761 mmHg		74%
	7 m/s		+30

14 September, Saturday. day, 29°; night, 28°; overcast

15 September, sun

	761 mmHg		74%
	5.5 m/s		+30

15 September, Sunday. day, 29°; night, 28°; rain

16 September, mon

	761 mmHg		75%
	6.9 m/s		+30

16 September, Monday. day, 29°; night, 28°; rain

17 September, tue

	761 mmHg		75%
	7.6 m/s		+30

17 September, Tuesday. day, 29°; night, 28°; rain

18 September, wed

	761 mmHg		75%
	7.5 m/s		+30

18 September, Wednesday. day, 29°; night, 28°; rain

19 September, thu

	761 mmHg		75%
	7.3 m/s		+30

19 September, Thursday. day, 29°; night, 28°; rain

20 September, fri

	761 mmHg		75%
	7.8 m/s		+30

20 September, Friday. day, 29°; night, 28°; rain

21 September, sat

	761 mmHg		74%
	9 m/s		+30

21 September, Saturday. day, 29°; night, 28°; rain

22 September, sun

	761 mmHg		74%
	9.3 m/s		+30

22 September, Sunday. day, 29°; night, 28°; rain

23 September, mon

	760 mmHg		74%
	8.6 m/s		+30

23 September, Monday. day, 29°; night, 28°; rain

24 September, tue

	760 mmHg		75%
	10.1 m/s		+30

24 September, Tuesday. day, 29°; night, 28°; clear

25 September, wed

	760 mmHg		73%
	11.3 m/s		+30

25 September, Wednesday. day, 29°; night, 28°; overcast

26 September, thu

	761 mmHg		70%
	9.3 m/s		+30

26 September, Thursday. day, 29°; night, 28°; overcast

27 September, fri

	761 mmHg		72%
	7.5 m/s		+30

27 September, Friday. day, 29°; night, 29°; rain

28 September, sat

	761 mmHg		73%
	5.4 m/s		+30

28 September, Saturday. day, 29°; night, 28°; rain

29 September, sun

	761 mmHg		75%
	6.5 m/s		+30

29 September, Sunday. day, 28°; night, 28°; rain

30 September, mon

	761 mmHg		75%
	8.5 m/s		+30

30 September, Monday. day, 28°; night, 28°; rain

1 October, tue

	761 mmHg		74%
	8.3 m/s		+30

1 October, Tuesday. day, 29°; night, 28°; rain

2 October, wed

	762 mmHg		75%
	7.9 m/s		+30

2 October, Wednesday. day, 29°; night, 28°; rain

3 October, thu

	762 mmHg		75%
	7.3 m/s		+30

3 October, Thursday. day, 29°; night, 28°; rain

4 October, fri

	761 mmHg		76%
	7.5 m/s		+30

4 October, Friday. day, 28°; night, 28°; clear

5 October, sat

	761 mmHg		76%
	7.5 m/s		+30

5 October, Saturday. day, 28°; night, 28°; rain

Average data for 10 years

San Jose September

3

sunny days

23

days with precipitation

4

cloudy days

3 sunny days; 23 days with precipitation; 4 cloudy days;

74

%

air humidity

5.8

m/s

WindSW

110

mm of precipitation

(7% of annual average)

+30

°C

Water temperature

air humidity 74%; 110 millimeters of precipitation (7% of annual average); Wind south-westerly 5.8 Meters per second; Water temperature +30°

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

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

In September, the weather in San Jose is typically hot. Average daily high temperature in September is about 29 degrees above zero. On average, San Jose has 23 rainy, 4 cloudy, and 3 sunny days in September. The rains are usually heavy. September as well as January, February, March, and June is considered the most uncomfortable time to visit San Jose.

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