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January 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 December, sun

	750 mmHg		68%
	4 m/s		+12

29 December, Sunday. day, 12°; night, 10°; rain

30 December, mon

	750 mmHg		67%
	3.4 m/s		+12

30 December, Monday. day, 12°; night, 9°; partly cloudy

31 December, tue

	750 mmHg		67%
	3.4 m/s		+12

31 December, Tuesday. day, 12°; night, 9°; partly cloudy

1 January, wed

	750 mmHg		63%
	3.5 m/s		+11

1 January, Wednesday. day, 11°; night, 9°; clear

2 January, thu

	749 mmHg		67%
	3.2 m/s		+11

2 January, Thursday. day, 11°; night, 9°; partly cloudy

3 January, fri

	749 mmHg		67%
	4.1 m/s		+11

3 January, Friday. day, 12°; night, 10°; partly cloudy

4 January, sat

	748 mmHg		68%
	4.5 m/s		+11

4 January, Saturday. day, 13°; night, 10°; partly cloudy

5 January, sun

	749 mmHg		67%
	3.7 m/s		+11

5 January, Sunday. day, 12°; night, 9°; partly cloudy

6 January, mon

	749 mmHg		69%
	3.7 m/s		+11

6 January, Monday. day, 11°; night, 9°; clear

7 January, tue

	749 mmHg		69%
	3.5 m/s		+11

7 January, Tuesday. day, 12°; night, 10°; partly cloudy

8 January, wed

	749 mmHg		72%
	4.3 m/s		+11

8 January, Wednesday. day, 12°; night, 11°; clear

9 January, thu

	750 mmHg		70%
	3.7 m/s		+11

9 January, Thursday. day, 12°; night, 10°; clear

10 January, fri

	751 mmHg		67%
	3.9 m/s		+11

10 January, Friday. day, 12°; night, 10°; clear

11 January, sat

	751 mmHg		68%
	3.2 m/s		+11

11 January, Saturday. day, 12°; night, 11°; rain

12 January, sun

	751 mmHg		72%
	3.7 m/s		+12

12 January, Sunday. day, 14°; night, 12°; rain

13 January, mon

	752 mmHg		63%
	3.7 m/s		+12

13 January, Monday. day, 14°; night, 12°; clear

14 January, tue

	753 mmHg		58%
	2.9 m/s		+12

14 January, Tuesday. day, 14°; night, 12°; clear

15 January, wed

	752 mmHg		58%
	2.9 m/s		+12

15 January, Wednesday. day, 14°; night, 11°; clear

16 January, thu

	751 mmHg		56%
	3 m/s		+12

16 January, Thursday. day, 14°; night, 12°; rain

17 January, fri

	751 mmHg		62%
	3 m/s		+12

17 January, Friday. day, 14°; night, 12°; partly cloudy

18 January, sat

	749 mmHg		62%
	4.9 m/s		+12

18 January, Saturday. day, 15°; night, 13°; partly cloudy

19 January, sun

	748 mmHg		66%
	4 m/s		+12

19 January, Sunday. day, 14°; night, 12°; clear

20 January, mon

	746 mmHg		64%
	5.8 m/s		+12

20 January, Monday. day, 14°; night, 12°; clear

21 January, tue

	745 mmHg		64%
	4.1 m/s		+11

21 January, Tuesday. day, 13°; night, 11°; clear

22 January, wed

	746 mmHg		72%
	4.5 m/s		+11

22 January, Wednesday. day, 13°; night, 11°; rain

23 January, thu

	747 mmHg		70%
	3.7 m/s		+11

23 January, Thursday. day, 13°; night, 11°; rain

24 January, fri

	750 mmHg		74%
	3.9 m/s		+11

24 January, Friday. day, 13°; night, 11°; partly cloudy

25 January, sat

	750 mmHg		72%
	4 m/s		+12

25 January, Saturday. day, 14°; night, 13°; rain

26 January, sun

	750 mmHg		69%
	4.4 m/s		+12

26 January, Sunday. day, 14°; night, 11°; partly cloudy

27 January, mon

	751 mmHg		67%
	3.2 m/s		+12

27 January, Monday. day, 14°; night, 11°; partly cloudy

28 January, tue

	752 mmHg		66%
	3 m/s		+12

28 January, Tuesday. day, 13°; night, 11°; partly cloudy

29 January, wed

	752 mmHg		73%
	3.5 m/s		+12

29 January, Wednesday. day, 14°; night, 12°; clear

30 January, thu

	750 mmHg		70%
	3.5 m/s		+12

30 January, Thursday. day, 13°; night, 11°; clear

31 January, fri

	749 mmHg		67%
	4 m/s		+12

31 January, Friday. day, 14°; night, 11°; clear

1 February, sat

	750 mmHg		63%
	3.7 m/s		+12

1 February, Saturday. day, 14°; night, 11°; clear

Average data for 10 years

Castro Valley January

14

sunny days

6

days with precipitation

11

cloudy days

14 sunny days; 6 days with precipitation; 11 cloudy days;

67

%

air humidity

2.5

m/s

WindSE

75

mm of precipitation

(19% of annual average)

+12

°C

Water temperature

air humidity 67%; 75 millimeters of precipitation (19% of annual average); Wind south-easterly 2.5 Meters per second; Water temperature +12°

Weather graphs for January

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

E

E

SE

SE

SE

SE

SE

SE

SE

SE

SE

E

E

SE

E

E

SE

SE

SE

SE

SE

SE

SE

SE

SE

SE

S

S

S

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 January

Alanya
Side
Tunis
Belek
Marmaris
Paphos
Athens
Lisbon
Heraklion

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

In January, the weather in Castro Valley is typically warm. Average daily high temperature in January is about 13 degrees above zero. On average, Castro Valley has 14 sunny, 11 partly cloudy, and 6 rainy days in January. The rains are usually moderate. January as well as February and December is considered the most uncomfortable time to visit Castro Valley.

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