March weather forecast in South San Francisco

In March, the weather in South San Francisco is typically warm. Average daily high temperature in March is about 14 degrees above zero. On average, South San Francisco has 12 sunny, 10 rainy, 5 partly cloudy, and 4 cloudy days in March. The rains are usually heavy. March as well as January, February, and December is considered the most uncomfortable time to visit South San Francisco.