National Weather Service Forecast for: Rancho Santa Margarita CA
Issued by: National Weather Service San Diego, CA
Updated: 2:46 am PDT Jun 5, 2025
 
Today

Today: Patchy drizzle and fog before 11am. Mostly cloudy, then gradually becoming sunny, with a high near 75. Light west wind increasing to 5 to 10 mph in the morning.
Patchy
Drizzle and
Patchy Fog
then Sunny
 Tonight

Tonight: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 56. West wind around 5 mph becoming calm in the evening.
Patchy Fog

 Friday

Friday: Patchy fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 77. West wind 5 to 10 mph.
Patchy Fog
then Sunny

 Friday
Night
Friday Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 57. West wind around 5 mph.
Patchy Fog

 Saturday

Saturday: Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 78. West wind 5 to 10 mph.
Patchy Fog
then Sunny

 Saturday
Night
Saturday Night: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 58.
Patchy Fog

 Sunday

Sunday: Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 81.
Patchy Fog
then Sunny

 Sunday
Night
Sunday Night: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 59.
Patchy Fog

 Monday

Monday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 81.
Patchy Fog
then Sunny
Hi 75 °F Lo 56 °F Hi 77 °F Lo 57 °F Hi 78 °F Lo 58 °F Hi 81 °F Lo 59 °F Hi 81 °F

 

Today
 
 Patchy drizzle and fog before 11am. Mostly cloudy, then gradually becoming sunny, with a high near 75. Light west wind increasing to 5 to 10 mph in the morning.
Tonight
 
 Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 56. West wind around 5 mph becoming calm in the evening.
Friday
 
 Patchy fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 77. West wind 5 to 10 mph.
Friday Night
 
 Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 57. West wind around 5 mph.
Saturday
 
 Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 78. West wind 5 to 10 mph.
Saturday Night
 
 Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 58.
Sunday
 
 Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 81.
Sunday Night
 
 Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 59.
Monday
 
 Patchy fog before 11am. Otherwise, mostly sunny, with a high near 81.
Monday Night
 
 Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 60.
Tuesday
 
 Patchy fog. Otherwise, mostly sunny, with a high near 81.
Tuesday Night
 
 Patchy fog. Otherwise, partly cloudy, with a low around 60.
Wednesday
 
 Patchy fog. Otherwise, mostly sunny, with a high near 79.

 

Forecast from NOAA-NWS for Rancho Santa Margarita CA.