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National Weather Service Forecast for: Castro Valley, CA


Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: Sat, 21-Jun-2025 11:52am PDT

Castro Valley/Hayward
 
This
Afternoon
This Afternoon: Sunny
Sunny
Sunday

Sunday: Sunny
Sunny
Monday

Monday: Mostly Sunny
Mostly Sunny
Tuesday

Tuesday: Mostly Sunny
Mostly Sunny
Wednesday

Wednesday: Mostly Sunny
Mostly Sunny
Thursday

Thursday: Sunny
Sunny
Friday

Friday: Sunny
Sunny
 
Hi 72 °F Hi 72 °F Hi 76 °F Hi 73 °F Hi 76 °F Hi 74 °F Hi 77 °F  
 
Tonight

Tonight: Mostly Clear
Mostly Clear
Sunday
Night
Sunday Night: Mostly Clear
Mostly Clear
Monday
Night
Monday Night: Partly Cloudy
Partly Cloudy
Tuesday
Night
Tuesday Night: Partly Cloudy
Partly Cloudy
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
Thursday
Night
Thursday Night: Partly Cloudy
Partly Cloudy
Friday
Night
Friday Night: Mostly Clear
Mostly Clear
 
Lo 52 °F Lo 53 °F Lo 54 °F Lo 54 °F Lo 55 °F Lo 55 °F Lo 54 °F  

 

This Afternoon
 
Sunny, with a high near 72. West wind 12 to 15 mph, with gusts as high as 20 mph.
Tonight
 
Mostly clear, with a low around 52. Southwest wind 2 to 13 mph, with gusts as high as 21 mph.
Sunday
 
Sunny. High near 72, with temperatures falling to around 69 in the afternoon. Southwest wind 2 to 13 mph.
Sunday Night
 
Mostly clear, with a low around 53. Southwest wind 1 to 10 mph.
Monday
 
Mostly sunny, with a high near 76. West wind 1 to 9 mph.
Monday Night
 
Partly cloudy, with a low around 54.
Tuesday
 
Mostly sunny, with a high near 73.
Tuesday Night
 
Partly cloudy, with a low around 54.
Wednesday
 
Mostly sunny, with a high near 76.
Wednesday Night
 
Mostly clear, with a low around 55.
Thursday
 
Sunny, with a high near 74.
Thursday Night
 
Partly cloudy, with a low around 55.
Friday
 
Sunny, with a high near 77.
Friday Night
 
Mostly clear, with a low around 54.

 

Forecast from NOAA-NWS for Castro Valley, CA.

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