January weather forecast in Gaithersburg

January in Gaithersburg is the snowiest and the coldest month of the year. In January, the weather in Gaithersburg is typically cold. Average daily high temperature in January is about 3 degrees above zero. On average, Gaithersburg has 15 partly cloudy, 9 sunny, 5 rainy, 1 snowy, and 1 cloudy day in January. The rains are usually moderate. January as well as February, March, and December is considered the most uncomfortable time to visit Gaithersburg.