In December, the weather in Lenox is typically cold. Average daily high temperature in December is about 2 degrees above zero. On average, Lenox has 10 partly cloudy, 7 cloudy, 6 sunny, 5 rainy, and 3 snowy days in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit Lenox.