March in Moses Lake is the rainiest month of the year. In March, the weather in Moses Lake is typically warm. Average daily high temperature in March is about 11 degrees above zero. On average, Moses Lake has 9 rainy, 9 partly cloudy, 7 cloudy, and 6 sunny days in March. The rains are usually light. March as well as January, February, November, and December is considered the most uncomfortable time to visit Moses Lake.