| National Weather Service Forecast for:
Rancho Santa Margarita CA Issued by: National Weather Service San Diego, CA |
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| Updated: 12:29 am PDT Jun 22, 2026 | ||||||||||||||||||
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| Today |
Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 79. Calm wind becoming west around 5 mph in the afternoon. |
| Tonight |
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 58. Southwest wind around 5 mph becoming calm in the evening. |
| Tuesday |
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon. |
| Tuesday Night |
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 62. Southwest wind around 5 mph becoming calm. |
| Wednesday |
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 85. Calm wind becoming west around 5 mph in the morning. |
| Wednesday Night |
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 59. |
| Thursday |
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 84. |
| Thursday Night |
Partly cloudy, with a low around 57. |
| Friday |
Sunny, with a high near 83. |
| Friday Night |
Mostly clear, with a low around 56. |
| Saturday |
Mostly sunny, with a high near 82. |
| Saturday Night |
Increasing clouds, with a low around 57. |
| Sunday |
Mostly cloudy, then gradually becoming sunny, with a high near 74. |
Forecast from NOAA-NWS for Rancho Santa Margarita CA.
