In March, the weather in South Lake Tahoe is typically cold. Average daily high temperature in March is about 6 degrees above zero. On average, South Lake Tahoe has 10 partly cloudy, 9 sunny, 5 cloudy, 4 rainy, and 3 snowy 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.