December weather forecast in Pullman

December in Pullman is the snowiest and the coldest month of the year. In December, the weather in Pullman is typically cold. Average daily high temperature in December is about 1 degree above zero. On average, Pullman has 10 rainy, 6 snowy, 6 cloudy, 6 partly cloudy, and 3 sunny days in December. The rains are usually moderate. December as well as January, February, March, and April is considered the most uncomfortable time to visit Pullman.