January weather forecast in Philadelphia

January in Philadelphia is the cloudiest and the coldest month of the year. In January, the weather in Philadelphia is typically warm. Average daily high temperature in January is about 13 degrees above zero. On average, Philadelphia has 10 rainy, 10 sunny, 6 cloudy, and 5 partly cloudy days in January. The rains are usually heavy. January as well as June, July, and August is considered the most uncomfortable time to visit Philadelphia.