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Hourly Forecast
Daylight Hours
05:51
Sunrise
20:23
Sunset
Daily Forecast
Tuesday
Today
Thursday
Friday
Saturday
Sunday
Monday
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Resources
UV Index
Humidity
Frequently asked questions about weather in Castro Valley
How warm does it get in Castro Valley?
The warmest month in Castro Valley is September, with average high temperatures of 26°C. The average temperature during this period is around 19°C.
How cold does it get in Castro Valley?
The coldest month in Castro Valley is December, with average low temperatures of 7°C. The average temperature during this period is around 10°C.
What is the wettest time of year in Castro Valley?
The wettest month in Castro Valley is January, with an average of 102mm of precipitation.
What is the driest time of year in Castro Valley?
The driest month in Castro Valley is August, with an average of 0mm of precipitation.
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