January in Monsey is the snowiest and the coldest month of the year. In January, the weather in Monsey is typically freezing. Average daily high temperature in January is about zero. On average, Monsey has 12 partly cloudy, 7 sunny, 5 cloudy, 4 rainy, and 3 snowy days in January. The rains are usually heavy. January as well as February, March, and December is considered the most uncomfortable time to visit Monsey.