Weather forecast for: San Marcos CA
Last Update: 4:20 am PDT Oct 11, 2026
Today: Showers, mainly before 11am. High near 69. Southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tonight: Showers likely, mainly after 11pm. Cloudy, with a low around 61. South wind 5 to 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Columbus Day: Showers likely, mainly before 11am. Mostly cloudy, with a high near 66. Southwest wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night: A chance of showers. Mostly cloudy, with a low around 57. Southwest wind 5 to 10 mph becoming light and variable. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday: Partly sunny, then gradually becoming sunny, with a high near 69. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night: Mostly clear, with a low around 55.
Wednesday: Sunny, with a high near 74.
Wednesday Night: Clear, with a low around 58.
Thursday: Sunny, with a high near 82.
Thursday Night: Clear, with a low around 62.
Friday: Sunny, with a high near 89.
Friday Night: Clear, with a low around 67.
Saturday: Sunny, with a high near 89.
WeatherWorld.com
City of San Marcos, CA
