March in South Lake Tahoe is the windiest month of the year. In March, the weather in South Lake Tahoe is typically cold. Average daily high temperature in March is about 5 degrees above zero. On average, South Lake Tahoe has 9 rainy, 8 sunny, 8 cloudy, and 6 partly cloudy days in March. The rains are usually heavy. March as well as January, February, April, and November is considered the most uncomfortable time to visit South Lake Tahoe.