Partly Sunny today in San Marcos, CA, with a high near 80 and a low around 66. Sunday looks mostly sunny, with a high near 80. Over the next 8 days, highs range from 70 to 90 with overnight lows from 65 to 71.

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

Data type: Weather forecast chart