National Weather Service Forecast for: Castroville CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 12:46 am PDT Aug 20, 2026
 
Overnight

Overnight: Cloudy, with a low around 57. Calm wind.
Cloudy

 Thursday

Thursday: Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 66. Light west southwest wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph.
Patchy Fog
then Partly
Sunny
 Thursday
Night
Thursday Night: Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 58. Southwest wind 5 to 8 mph becoming calm after midnight.
Mostly Cloudy
then Patchy
Fog
 Friday

Friday: Patchy fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 66. Light and variable wind becoming west 6 to 11 mph in the afternoon. Winds could gust as high as 20 mph.
Patchy Fog
then Partly
Sunny
 Friday
Night
Friday Night: Mostly cloudy, with a low around 58. West southwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 18 mph.
Mostly Cloudy

 Saturday

Saturday: Mostly sunny, with a high near 66.
Mostly Sunny

 Saturday
Night
Saturday Night: Partly cloudy, with a low around 58.
Partly Cloudy

 Sunday

Sunday: Partly sunny, with a high near 66.
Partly Sunny

 Sunday
Night
Sunday Night: Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 57.
Mostly Cloudy
then Patchy
Fog
Lo 57 °F Hi 66 °F Lo 58 °F Hi 66 °F Lo 58 °F Hi 66 °F Lo 58 °F Hi 66 °F Lo 57 °F

 

Overnight
 
 Cloudy, with a low around 57. Calm wind.
Thursday
 
 Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 66. Light west southwest wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph.
Thursday Night
 
 Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 58. Southwest wind 5 to 8 mph becoming calm after midnight.
Friday
 
 Patchy fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 66. Light and variable wind becoming west 6 to 11 mph in the afternoon. Winds could gust as high as 20 mph.
Friday Night
 
 Mostly cloudy, with a low around 58. West southwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 18 mph.
Saturday
 
 Mostly sunny, with a high near 66.
Saturday Night
 
 Partly cloudy, with a low around 58.
Sunday
 
 Partly sunny, with a high near 66.
Sunday Night
 
 Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 57.
Monday
 
 Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 65.
Monday Night
 
 Patchy fog. Otherwise, mostly cloudy, with a low around 57.
Tuesday
 
 Patchy fog. Otherwise, mostly cloudy, with a high near 65.
Tuesday Night
 
 Mostly cloudy, with a low around 57.
Wednesday
 
 Mostly cloudy, with a high near 66.

 

Forecast from NOAA-NWS for Castroville CA.