National Weather Service Forecast for: Rancho Santa Margarita CA
Issued by: National Weather Service San Diego, CA
Updated: 1:01 pm PDT Jun 23, 2025
 
Tonight

Tonight: Partly cloudy, with a low around 51. South wind around 5 mph becoming calm in the evening.
Partly Cloudy
 Tuesday

Tuesday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 75. Light southwest wind increasing to 5 to 10 mph in the morning.
Patchy Fog
then Sunny
 Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 54. Southwest wind around 5 mph becoming calm.
Partly Cloudy
 Wednesday

Wednesday: Mostly sunny, with a high near 80. Light west wind increasing to 5 to 10 mph in the morning.
Mostly Sunny
 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 56. West wind around 5 mph becoming calm in the evening.
Partly Cloudy
 Thursday

Thursday: Mostly sunny, with a high near 82.
Mostly Sunny
 Thursday
Night
Thursday Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 57.
Patchy Fog
 Friday

Friday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 83.
Patchy Fog
then Sunny
 Friday
Night
Friday Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 58.
Patchy Fog
Lo 51 °F Hi 75 °F Lo 54 °F Hi 80 °F Lo 56 °F Hi 82 °F Lo 57 °F Hi 83 °F Lo 58 °F

 

Tonight
 
 Partly cloudy, with a low around 51. South wind around 5 mph becoming calm in the evening.
Tuesday
 
 Patchy fog before 11am. Otherwise, mostly sunny, with a high near 75. Light southwest wind increasing to 5 to 10 mph in the morning.
Tuesday Night
 
 Partly cloudy, with a low around 54. Southwest wind around 5 mph becoming calm.
Wednesday
 
 Mostly sunny, with a high near 80. Light west wind increasing to 5 to 10 mph in the morning.
Wednesday Night
 
 Partly cloudy, with a low around 56. West wind around 5 mph becoming calm in the evening.
Thursday
 
 Mostly sunny, with a high near 82.
Thursday Night
 
 Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 57.
Friday
 
 Patchy fog before 11am. Otherwise, mostly sunny, with a high near 83.
Friday Night
 
 Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 58.
Saturday
 
 Patchy fog before 11am. Otherwise, mostly sunny, with a high near 85.
Saturday Night
 
 Patchy fog. Otherwise, partly cloudy, with a low around 59.
Sunday
 
 Patchy fog. Otherwise, mostly sunny, with a high near 85.
Sunday Night
 
 Patchy fog. Otherwise, partly cloudy, with a low around 59.
Monday
 
 Patchy fog. Otherwise, mostly sunny, with a high near 85.

 

Forecast from NOAA-NWS for Rancho Santa Margarita CA.