| National Weather Service Forecast for:
San Marcos CA Issued by: National Weather Service San Diego, CA |
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| Updated: 2:23 am PDT Jun 30, 2026 | ||||||||||||||||||
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| Overnight |
Patchy drizzle. Cloudy, with a low around 60. South wind around 5 mph becoming calm. |
| Tuesday |
Cloudy through mid morning, then gradual clearing, with a high near 71. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. |
| Tuesday Night |
Increasing clouds, with a low around 57. West wind 5 to 10 mph becoming light southwest in the evening. |
| Wednesday |
Cloudy through mid morning, then gradual clearing, with a high near 72. Light and variable wind becoming west 5 to 10 mph in the morning. |
| Wednesday Night |
Increasing clouds, with a low around 57. West wind around 5 mph becoming calm in the evening. |
| Thursday |
Mostly cloudy, then gradually becoming sunny, with a high near 74. |
| Thursday Night |
Increasing clouds, with a low around 58. |
| Friday |
Mostly cloudy, then gradually becoming sunny, with a high near 76. |
| Friday Night |
Increasing clouds, with a low around 59. |
| Independence Day |
Mostly cloudy, then gradually becoming sunny, with a high near 77. |
| Saturday Night |
Increasing clouds, with a low around 60. |
| Sunday |
Mostly cloudy through mid morning, then gradual clearing, with a high near 76. |
| Sunday Night |
Increasing clouds, with a low around 61. |
| Monday |
Mostly cloudy, then gradually becoming sunny, with a high near 77. |
Forecast from NOAA-NWS for San Marcos CA.
