Monthly Average Rainy days in Castro Valley (CA)
The number of days each month with rain, snow and hail in Castro Valley (California), the United States of America.
- Castro Valley has dry periods in June, July, August and September.
- On average, December is the most rainy with 13 days of rain/snow.
- On average, July is the driest month with 0 rainy days.
- The average annual number of rainy days is 72.
Current rainfall in Castro Valley (CA)
Tue Dec 24
17°C | 10°C
W 
5 m/s
5 m/s13 mm
partly cloudy and rain
Wed Dec 25
14°C | 7°C
W 3 m/s
3 m/s
broken clouds and no rain
Thu Dec 26
16°C | 10°C
S 3 m/s
3 m/s2.5 mm
overcast and slight rain
