December weather forecast in Filadelfia

In December, the weather in Filadelfia is typically hot. Average daily high temperature in December is about 34 degrees above zero. On average, Filadelfia has 12 rainy, 9 sunny, 8 partly cloudy, and 2 cloudy days in December. The rains are usually heavy. December as well as January, February, March, and October is considered the most uncomfortable time to visit Filadelfia.