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July weather forecast in Castro Valley

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

29 June, sun

	745 mmHg		56%
	4.3 m/s		+13

29 June, Sunday. day, 21°; night, 14°; clear

30 June, mon

	744 mmHg		60%
	4.3 m/s		+14

30 June, Monday. day, 22°; night, 15°; clear

1 July, tue

	744 mmHg		62%
	4 m/s		+14

1 July, Tuesday. day, 21°; night, 14°; clear

2 July, wed

	744 mmHg		58%
	4.4 m/s		+14

2 July, Wednesday. day, 22°; night, 15°; clear

3 July, thu

	744 mmHg		56%
	4.5 m/s		+14

3 July, Thursday. day, 22°; night, 14°; clear

4 July, fri

	745 mmHg		60%
	4.5 m/s		+14

4 July, Friday. day, 21°; night, 14°; clear

5 July, sat

	746 mmHg		61%
	4.3 m/s		+14

5 July, Saturday. day, 21°; night, 14°; clear

6 July, sun

	745 mmHg		58%
	4.1 m/s		+14

6 July, Sunday. day, 22°; night, 15°; clear

7 July, mon

	744 mmHg		55%
	4.1 m/s		+14

7 July, Monday. day, 22°; night, 15°; clear

8 July, tue

	745 mmHg		61%
	4 m/s		+14

8 July, Tuesday. day, 21°; night, 14°; clear

9 July, wed

	745 mmHg		60%
	4.1 m/s		+14

9 July, Wednesday. day, 21°; night, 15°; clear

10 July, thu

	745 mmHg		57%
	4.5 m/s		+14

10 July, Thursday. day, 21°; night, 14°; clear

11 July, fri

	746 mmHg		61%
	4.8 m/s		+14

11 July, Friday. day, 21°; night, 14°; clear

12 July, sat

	746 mmHg		58%
	4.4 m/s		+14

12 July, Saturday. day, 22°; night, 15°; clear

13 July, sun

	745 mmHg		56%
	4.4 m/s		+15

13 July, Sunday. day, 23°; night, 15°; clear

14 July, mon

	745 mmHg		56%
	4.4 m/s		+14

14 July, Monday. day, 23°; night, 15°; clear

15 July, tue

	746 mmHg		61%
	4.6 m/s		+14

15 July, Tuesday. day, 22°; night, 15°; clear

16 July, wed

	746 mmHg		62%
	4.5 m/s		+15

16 July, Wednesday. day, 21°; night, 14°; clear

17 July, thu

	746 mmHg		62%
	4.4 m/s		+15

17 July, Thursday. day, 20°; night, 14°; clear

18 July, fri

	746 mmHg		61%
	4.5 m/s		+15

18 July, Friday. day, 22°; night, 15°; clear

19 July, sat

	746 mmHg		62%
	4.5 m/s		+15

19 July, Saturday. day, 21°; night, 14°; clear

20 July, sun

	745 mmHg		62%
	4.6 m/s		+15

20 July, Sunday. day, 20°; night, 14°; clear

21 July, mon

	745 mmHg		62%
	4.5 m/s		+14

21 July, Monday. day, 21°; night, 15°; clear

22 July, tue

	746 mmHg		60%
	4.3 m/s		+14

22 July, Tuesday. day, 21°; night, 15°; clear

23 July, wed

	746 mmHg		57%
	4.9 m/s		+14

23 July, Wednesday. day, 22°; night, 15°; clear

24 July, thu

	745 mmHg		58%
	4.4 m/s		+15

24 July, Thursday. day, 22°; night, 14°; clear

25 July, fri

	746 mmHg		57%
	4 m/s		+15

25 July, Friday. day, 22°; night, 15°; clear

26 July, sat

	745 mmHg		54%
	4.5 m/s		+15

26 July, Saturday. day, 24°; night, 16°; clear

27 July, sun

	745 mmHg		57%
	4.3 m/s		+15

27 July, Sunday. day, 21°; night, 15°; clear

28 July, mon

	746 mmHg		61%
	4.3 m/s		+15

28 July, Monday. day, 21°; night, 14°; clear

29 July, tue

	746 mmHg		58%
	4.5 m/s		+15

29 July, Tuesday. day, 21°; night, 14°; clear

30 July, wed

	746 mmHg		60%
	4.4 m/s		+15

30 July, Wednesday. day, 21°; night, 15°; clear

31 July, thu

	746 mmHg		58%
	4.3 m/s		+15

31 July, Thursday. day, 21°; night, 15°; clear

1 August, fri

	746 mmHg		58%
	4.5 m/s		+15

1 August, Friday. day, 21°; night, 15°; clear

2 August, sat

	746 mmHg		60%
	4.3 m/s		+15

2 August, Saturday. day, 22°; night, 15°; clear

Average data for 10 years

Castro Valley July

31

sunny days

0

days with precipitation

0

cloudy days

31 sunny days; 0 days with precipitation; 0 cloudy days;

58

%

air humidity

2.7

m/s

WindW

0.5

mm of precipitation

(1% of annual average)

+14

°C

Water temperature

air humidity 58%; 0.5 millimeters of precipitation (1% of annual average); Wind westerly 2.7 Meters per second; Water temperature +14°

Weather graphs for July

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

SW

W

W

W

W

SW

SW

SW

SW

SW

W

W

SW

SW

W

W

SW

W

SW

SW

SW

W

W

W

SW

W

W

W

W

W

W

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

31

Daytime temperature

Night-time temperature

Cities near you

San Francisco
Sacramento
Oakland
San Jose
Cupertino
Reno
Monterey
South San Francisco
Mountain View

Cities with similar weather in July

Helsinki
Riga
Tallinn
Stockholm
Oslo
Yurmala
Palanga
Copenhagen
Gdansk

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

July in Castro Valley is the sunniest month of the year. In July, the weather in Castro Valley is typically warm. Average daily high temperature in July is about 21 degrees above zero. On average, Castro Valley has 31 sunny days in July. July as well as June, August, September, and October is considered the most comfortable time to visit Castro Valley.

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