National Weather Service Forecast for: Oceanside CA
Issued by: National Weather Service San Diego, CA
Updated: 11:14 am PDT Mar 19, 2026
 
Tonight

Tonight: Mostly clear, with a low around 59. Southwest wind around 5 mph becoming calm  in the evening.
Mostly Clear

Friday

Friday: Sunny, with a high near 85. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Sunny

Friday
Night
Friday Night: Mostly clear, with a low around 56. West wind around 5 mph becoming calm  in the evening.
Mostly Clear

Saturday

Saturday: Mostly sunny, with a high near 80. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Mostly Sunny

Saturday
Night
Saturday Night: Patchy fog after 11pm.  Otherwise, mostly cloudy, with a low around 55. Southwest wind around 5 mph becoming calm  in the evening.
Patchy Fog

Sunday

Sunday: Patchy fog before 11am.  Otherwise, partly sunny, with a high near 79.
Patchy Fog
then Partly
Sunny
Sunday
Night
Sunday Night: Partly cloudy, with a low around 55.
Partly Cloudy

Monday

Monday: Sunny, with a high near 79.
Sunny

Monday
Night
Monday Night: Patchy fog after 11pm.  Otherwise, partly cloudy, with a low around 56.
Patchy Fog

Lo 59 °F Hi 85 °F Lo 56 °F Hi 80 °F Lo 55 °F Hi 79 °F Lo 55 °F Hi 79 °F Lo 56 °F

Heat Advisory
 

Tonight
 
Mostly clear, with a low around 59. Southwest wind around 5 mph becoming calm in the evening.
Friday
 
Sunny, with a high near 85. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Friday Night
 
Mostly clear, with a low around 56. West wind around 5 mph becoming calm in the evening.
Saturday
 
Mostly sunny, with a high near 80. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Saturday Night
 
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 55. Southwest wind around 5 mph becoming calm in the evening.
Sunday
 
Patchy fog before 11am. Otherwise, partly sunny, with a high near 79.
Sunday Night
 
Partly cloudy, with a low around 55.
Monday
 
Sunny, with a high near 79.
Monday Night
 
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 56.
Tuesday
 
Mostly sunny, with a high near 80.
Tuesday Night
 
Partly cloudy, with a low around 56.
Wednesday
 
Mostly sunny, with a high near 80.
Wednesday Night
 
Partly cloudy, with a low around 57.
Thursday
 
Mostly sunny, with a high near 81.

 

Forecast from NOAA-NWS for Oceanside CA.