March in Santa Maria is the coldest month of the year. In March, the weather in Santa Maria is typically warm. Average daily high temperature in March is about 16 degrees above zero. On average, Santa Maria has 11 rainy, 11 partly cloudy, 5 cloudy, and 4 sunny days in March. The rains are usually moderate. March as well as January, October, November, and December is considered the most uncomfortable time to visit Santa Maria.