December in Tympy is the most freezing month of the year. In December, the weather in Tympy is typically freezing. Average daily high temperature in December is about 33 degrees below zero. On average, Tympy has 28 cloudy, 2 sunny, and 1 partly cloudy day in December. December as well as January, February, March, and November is considered the most uncomfortable time to visit Tympy.