Castro Valley

Hawaii County, California, United States

Forecast Summary

The next few hours will be mostly clear, with today reaching 26°C and dropping to 11°C. The coming days will be hazy throughout the day.

Current Weather

15°

Partly Cloudy

Feels Like

15°

Min

14°

Max

26°

Compared to Yesterday

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Hourly Forecast

Weather forecast for the next 48 hours.

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Today
Tomorrow
Monday

UV Index

No protection needed

0 Low
Low Extreme

Humidity

Current air moisture level

78% Humid
Low High

Daylight Hours

11 hours 57 minutes of sunlight today

07:17

Sunrise

19:14

Sunset

Daily Forecast

Weather forecast for the next 8 days.

Today

14°
26°

Sunday

11°
22°

Monday

12°
24°

Tuesday

12°
25°

Wednesday

13°
23°

Thursday

11°
24°

Friday

12°
25°

Saturday

12°
23°

Air Quality Data Available

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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.

View full climate insights for Castro Valley →

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Metric (°C, km/h)