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Castro Valley, CA
 63° 
Last Updated on Aug 16 2018, 12:54 am PDT
Current ConditionsOvercast
Relative Humidity81%
WindWest at 6.9 MPH
(6 KT)
Pressure29.98 mb
Dewpoint57.0 F (13.9 C)
Wind Chill63 F (17 C)
Visibility9.00 miles

7-Day Forecast

Overnight
Mostly Cloudy
Low: 57°
Mostly cloudy with a low around 57.
Southwest wind around 6 mph.


Thursday
Decreasing Clouds
High: 76°
Mostly cloudy,
then gradually becoming sunny with a high near 76.
West wind 5 to 11 mph.


Thursday Night
Increasing Clouds
Low: 56°
Increasing clouds with a low around 56.
West wind 6 to 11 mph becoming light west southwest after midnight.


Friday
Decreasing Clouds
High: 80°
Mostly cloudy,
then gradually becoming sunny with a high near 80.
West wind 5 to 10 mph.


Friday Night
Partly Cloudy
Low: 55°
Partly cloudy with a low around 55.
West wind 5 to 10 mph becoming light southwest in the evening.


Saturday
Mostly Sunny
High: 83°
Mostly sunny with a high near 83.


Saturday Night
Partly Cloudy
Low: 55°
Partly cloudy with a low around 55.


Sunday
Mostly Sunny
High: 80°
Mostly sunny with a high near 80.


Sunday Night
Partly Cloudy
Low: 56°
Partly cloudy with a low around 56.


Monday
Mostly Sunny
High: 78°
Mostly sunny with a high near 78.


Monday Night
Partly Cloudy
Low: 56°
Partly cloudy with a low around 56.


Tuesday
Mostly Sunny
High: 78°
Mostly sunny with a high near 78.


Tuesday Night
Partly Cloudy
Low: 56°
Partly cloudy with a low around 56.


Wednesday
Mostly Sunny
High: 78°
Mostly sunny with a high near 78.


Source: National Weather Service








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