January in Union Township is the snowiest and the coldest month of the year. In January, the weather in Union Township is typically cold. Average daily high temperature in January is about 1 degree above zero. On average, Union Township has 15 partly cloudy, 8 sunny, 4 rainy, 3 cloudy, and 1 snowy day in January. The rains are usually light. January as well as February, March, and December is considered the most uncomfortable time to visit Union Township.