| National Weather Service Forecast for:
Rancho Santa Margarita CA Issued by: National Weather Service San Diego, CA |
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| Updated: 5:33 am PDT Oct 6, 2026 | ||||||||||||||||||
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| Today |
Sunny, with a high near 97. Southwest wind 5 to 10 mph. |
| Tonight |
Mostly clear, with a low around 71. Northwest wind around 5 mph becoming calm. |
| Wednesday |
Sunny, with a high near 96. Light and variable wind becoming west 5 to 10 mph in the afternoon. |
| Wednesday Night |
Mostly clear, with a low around 70. West wind around 5 mph becoming calm. |
| Thursday |
Sunny, with a high near 95. Calm wind becoming west around 5 mph in the afternoon. |
| Thursday Night |
Mostly clear, with a low around 67. |
| Friday |
Sunny, with a high near 92. |
| Friday Night |
Mostly clear, with a low around 65. |
| Saturday |
Mostly sunny, with a high near 85. |
| Saturday Night |
Partly cloudy, with a low around 61. |
| Sunday |
A slight chance of showers. Mostly sunny, with a high near 77. |
| Sunday Night |
A chance of showers. Partly cloudy, with a low around 57. |
| Columbus Day |
A chance of showers. Mostly sunny, with a high near 74. |
Forecast from NOAA-NWS for Rancho Santa Margarita CA.
