Weather in Philadelphia, Pennsylvania, United States in December
In an average December, Philadelphia sees a daily high around 43°F and a low around 27°F, based on 1981–2026 of local climate records.
| Average high | 43°F |
|---|---|
| Typical high range | 31°F to 55°F |
| Average low | 27°F |
| Typical low range | 18°F to 38°F |
| Average daily precipitation | 0.10 in |
December records
The most extreme December on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total December accumulation.
High
Highest
75°F
1998-12-07
Lowest
10°F
1983-12-25
Low
Highest
57°F
2015-12-24
Lowest
0°F
1989-12-23
Feels-like
Highest
57°F
2015-12-24
Lowest
-21°F
1983-12-25
Humidity
Highest
13.7 g/m³
2013-12-22
Lowest
1.2 g/m³
1983-12-25
Wind
Highest
35 mph
1992-12-11
Lowest
4 mph
1986-12-16
Precip
Wettest
8.81 in
2023
Driest
0.91 in
1988
See Philadelphia's live weather grade →
Visiting Philadelphia in December? See how its comfort stacks up against where you live.
Compare Philadelphia with your city →