Weather Castro Valley weekend

Weather forecast for Castro Valley for this and next weekend.

Saturday from morning untill noon cloudy, later morning initially cloudy, later partly cloudy, in the afternoon initially partly cloudy, later clear. Sunday during the day morning cloudy, in the afternoon initially cloudy, later clear.

Friday, Sep 5

64 / 57°F

0.00 in

9 mph

	64 °F	64 °F	5 pm
	59 °F	59 °F	11 pm

sunrise 6:41 am
sunset 7:31 pm

HOURLY

During the day overcast. The highest temperature 64 °F. Total rainfall 0.02 in. At night cloudy. The lowest temperature 57 °F.

Interactive map weather California, USA

GPS: 37.6941; -122.0864

altitude: 160 ft
local time:

PLACES IN THE AREA

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Weather forecast Castro Valley, California, USA extended forecast

Time			Precip.	Wind	Pressure	Humidity	Dew	total	Fog	Low	Middle	High
Friday 09/05/2025
5 AM 8 AM	overcast	57 °F 57 °F	0.02 in	11 fps 8 mph west-southwest	29.8 in	94 %	55 °F	100 %	0%	100%	0%	0%
11 AM 2 PM	overcast	61 °F 61 °F	0.0 in	13 fps 9 mph west-southwest	29.9 in	82 %	55 °F	100 %	0%	100%	0%	0%
5 PM 8 PM	overcast	64 °F 64 °F	0.0 in	14 fps 10 mph west	29.8 in	73 %	55 °F	93 %	0%	93%	0%	0%
11 PM 2 AM	overcast	59 °F 59 °F	0.0 in	10 fps 7 mph west-southwest	29.9 in	88 %	55 °F	100 %	0%	100%	0%	0%
Saturday 09/06/2025
5 AM 8 AM	cloudy	57 °F 57 °F	0.0 in	10 fps 6 mph west-southwest	29.9 in	88 %	54 °F	78 %	0%	78%	0%	0%
11 AM 2 PM	partly cloudy	64 °F 64 °F	0.0 in	10 fps 7 mph west-southwest	30.0 in	66 %	52 °F	33 %	0%	33%	0%	0%
5 PM 8 PM	clear	68 °F 68 °F	0.0 in	13 fps 9 mph west	29.9 in	60 %	54 °F	0 %	0%	0%	0%	0%
11 PM 2 AM	clear	61 °F 63 °F	0.0 in	2 fps 1 mph west-southwest	30.0 in	91 %	57 °F	0 %	0%	0%	0%	0%

Castro Valley, California, USA - information

State: California, USA

GPS coordinates: 37.6941; -122.0864

Time zone: America / Los Angeles time difference in hours with time in NY is -9 hours

Population: 61 388
Altitude: 160 ft
The administrative part:

California, Sacramento
Alameda County, Oakland

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Weather Castro Valley, California, USA. Weather forecast Castro Valley.

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Data source

Weather forecast for Castro Valley is supplied by MET Norway Norwegian Meteorological Institute and the NRK.

Feels like

To calculate the perceived temperature, we use the Australian Apparent Temperature (AAT) model, which is designed for year-round calculations and takes air humidity into account in addition to temperature and wind speed.

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Astronomical information Castro Valley

data are always in the local time

Sun and light

Sept. 5, 2025

Sunrise:	Sunset:
6:41 am	7:31 pm
Noon:	Length of day:
1:06 pm	12:49
Start of civil twilight*:	End of civil twilight*:
6:14 am	7:58 pm
Start of nautical twilight*:	End of nautical twilight*:
5:44 am	8:28 pm
Start of astronomical twilight*:	End of astronomical twilight*:
5:11 am	9:01 pm
* What is Twilight?

Moon and moon phases

Moonrise:	Moonset:
09/04/2025 6:07 pm	09/05/2025 4:12 am
Next new moon:	Next full moon:
09/21/2025	09/07/2025