Slight Chance Rain Showers today in San Marcos, CA, with a high near 77 and a low tonight around 62. Chances of rain run around 74% today. Thursday looks showers and thunderstorms, with a high near 69. Over the next 6 days, highs range from 69 to 82 with overnight lows from 56 to 61.

The National Weather Service 7-day forecast for your location, with daily and hourly temperature, chance of precipitation, wind, and conditions.