February in Littleton is the snowiest and the cloudiest month of the year. In February, the weather in Littleton is typically cold. Average daily high temperature in February is about 4 degrees above zero. On average, Littleton has 15 partly cloudy, 12 sunny, 1 rainy, and 1 snowy day in February. The rains are usually light. February as well as January and December is considered the most uncomfortable time to visit Littleton.