San Marcos, CA has a mild Mediterranean climate with warm, dry summers and cool, wet winters. The temperature rarely dips below freezing and snowfall is rare. During the summer months temperatures can reach into the 90s, while winter temperatures usually stay in the mid 60s. The area receives an average of 15-20 inches of precipitation annually, most of which falls during winter months. San Marcos typically has sunny days throughout the year, making it a great place to enjoy the outdoors any time of year!
San Marcos, California gets 14 inches of rain, on average, per year. The US average is 38 inches of rain per year.
San Marcos averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 265 sunny days per year in San Marcos. The US average is 205 sunny days.
San Marcos gets some kind of precipitation, on average, 41 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 81 degrees
Winter Low: the January low is 45
Rain: averages 14 inches of rain a year
Snow: averages 0 inches of snow a year