June in Filadelfia is the coldest month of the year. In June, the weather in Filadelfia is typically warm. Average daily high temperature in June is about 21 degrees above zero. On average, Filadelfia has 9 sunny, 9 cloudy, 8 partly cloudy, and 4 rainy days in June. The rains are usually light. June as well as July and August is considered the most comfortable time to visit Filadelfia.