Weather · Philadelphia, United States
Philadelphia Weather in December
December in Philadelphia averages 17°C by day and 7°C at night, with about 128mm of rain. That makes it a reasonable time to visit.
Avg high
17°C
63°F
Avg low
7°C
45°F
Rainfall
128mm
#5 wettest of 12
What to pack
Layers, plus a jacket for mornings and nights. Bring a compact umbrella for the odd shower.
Timing a trip around the weather? A Local Friend in Philadelphia builds it around the season for you.