National Weather Service Forecast for: 4 Miles NNW Rancho Santa Margarita CA
Issued by: National Weather Service San Diego, CA
Updated: 2:23 am PDT Jun 30, 2026
 
Today

Today: Partly sunny, with a high near 72. South wind 5 to 10 mph becoming west in the afternoon.
Partly Sunny
Tonight

Tonight: Patchy fog after 11pm.  Otherwise, increasing clouds, with a low around 54. Southwest wind around 5 mph becoming southeast after midnight.
Patchy Fog
Wednesday

Wednesday: Patchy fog before 11am.  Otherwise, cloudy through mid morning, then gradual clearing, with a high near 73. Southeast wind 5 to 10 mph becoming southwest in the afternoon.
Patchy Fog
then Sunny
Wednesday
Night
Wednesday Night: Patchy fog after 11pm.  Otherwise, partly cloudy, with a low around 53. Southwest wind around 5 mph becoming calm  in the evening.
Patchy Fog
Thursday

Thursday: Patchy fog before 11am.  Otherwise, mostly sunny, with a high near 76. Light and variable wind becoming southwest 5 to 10 mph in the morning.
Patchy Fog
then Sunny
Thursday
Night
Thursday Night: Patchy fog after 11pm.  Otherwise, partly cloudy, with a low around 54.
Patchy Fog
Friday

Friday: Patchy fog before 11am.  Otherwise, mostly sunny, with a high near 79.
Patchy Fog
then Sunny
Friday
Night
Friday Night: Partly cloudy, with a low around 55.
Partly Cloudy
Independence
Day
Independence Day: Mostly sunny, with a high near 80.
Mostly Sunny
Hi 72 °F Lo 54 °F Hi 73 °F Lo 53 °F Hi 76 °F Lo 54 °F Hi 79 °F Lo 55 °F Hi 80 °F

 

Today
 
Partly sunny, with a high near 72. South wind 5 to 10 mph becoming west in the afternoon.
Tonight
 
Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 54. Southwest wind around 5 mph becoming southeast after midnight.
Wednesday
 
Patchy fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 73. Southeast wind 5 to 10 mph becoming southwest in the afternoon.
Wednesday Night
 
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 53. Southwest wind around 5 mph becoming calm in the evening.
Thursday
 
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 76. Light and variable wind becoming southwest 5 to 10 mph in the morning.
Thursday Night
 
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 54.
Friday
 
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 79.
Friday Night
 
Partly cloudy, with a low around 55.
Independence Day
 
Mostly sunny, with a high near 80.
Saturday Night
 
Partly cloudy, with a low around 57.
Sunday
 
Sunny, with a high near 80.
Sunday Night
 
Mostly clear, with a low around 57.
Monday
 
Sunny, with a high near 81.

 

Forecast from NOAA-NWS for 4 Miles NNW Rancho Santa Margarita CA.