Philadelphia in december: average Weather, Temperature and Climate
Weather in Philadelphia in december 2026
The weather in Philadelphia in the month of december comes from statistical datas on the last years. You can view the weather statistics for the whole month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout december
very bad weather 37.2cm
Weather at 6am
38°F
Clear/Sunny
39% of time
23%
19%
13%
Weather at 12pm
45°F
Clear/Sunny
35% of time
26%
23%
6%
Weather at 6pm
41°F
Clear/Sunny
38% of time
25%
19%
9%
Weather at 3am
40°F
36%
25%
16%
9%
Evolution of daily average temperature and precipitation in Philadelphia in december
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Philadelphia in december.
The climate of Philadelphia in december is very bad
In december in Philadelphia, the climate is quite dry (with 2.9in of rainfall over 5 days). Unfortunately, the weather conditions is worsening than the previous month since in november there is an average of 2.1in of rainfall over 4 days.
The climate is quite more than very fresh in that area this month. Do not forget to cover yourself! Temperatures are up to 47°F. On average, the recorded minimum temperature is 38°F. Thus, the mean temperature average in december in Philadelphia is 41°F. These temperatures are far removed from those records observed in Philadelphia in the month of december with a maximum record of 70°F in 2015 and a minimum record of 16°F in 2009. You need to prepare to have about 11 days with temperatures down below 32°F, or 35% of time.
On this month of december, day length in Philadelphia is generally 09:20. Sunrise is at 07:16 and sets at 16:36.
December: another location in the United States (USA)?
If you want to go to the United States (USA) in december, there are destinations with better weather than Philadelphia:
In december, Miami (Florida) has perfect weather.
Furthermore, Hawaii (Honolulu), Houston, Myrtle Beach, Phoenix (Arizona), Carolina Beach and Dauphin Island (Alabama) have good weather.
Finally, California, Louisiana, Atlanta, Dallas, Austin and Big Bend National Park (Texas) have a tolerable climate, but better than Philadelphia.
Seasonal average climate and temperature of Philadelphia in december
Check below seasonal norms These statistics are set from the weather statements of the past years of the month of december.
| December | |||||
| Outside temperature | |||||
| Average temperature | 41°F | ||||
| Highest temperature | 47°F | ||||
| Lowest temperature | 38°F | ||||
| Highest record temperature | 70°F (2015) | ||||
| Lowest record temperature | 16°F (2009) | ||||
| Number of days at +65°F | 1 day(s) (3%) | ||||
| Number of days at -32°F | 11 day(s) (35%) | ||||
| Sea temperature | |||||
| Average sea temperature | 48°F | ||||
| Lowest sea temperature | 43°F | ||||
| Highest sea temperature | 53°F | ||||
| Wind | |||||
| Wind speed | 18km/h | ||||
| Wind temperature | 32°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 2.9in | ||||
| Number of days with rainfall | 5 day(s) (15%) | ||||
| Record daily rainfall | 1.7in (2011) | ||||
| Snowfall | 37.2cm | ||||
| Other climate data | |||||
| Humidity | 82% | ||||
| Visibility | 8.87km | ||||
| Cloud cover | 46% | ||||
| UV index | 3 | ||||
| Daily sunshine hours | 7 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 07:16 | ||||
| Time of sunset | 16:36 | ||||
| Length of day | 09:20 | ||||
| Our opinion about the weather in december | |||||
| Our opinion at whereandwhen.net | very bad | ||||
How was the weather last december?
Here is the day by day recorded weather in Philadelphia in december 2025:
31°F to 41°F
34°F to 40°F
29°F to 41°F
31°F to 43°F
20°F to 34°F
31°F to 38°F
27°F to 38°F
31°F to 34°F
20°F to 34°F
31°F to 41°F
32°F to 36°F
25°F to 36°F
25°F to 40°F
29°F to 34°F
18°F to 29°F
25°F to 36°F
27°F to 40°F
23°F to 47°F
49°F to 54°F
23°F to 34°F
32°F to 43°F
23°F to 36°F
34°F to 38°F
38°F to 41°F
32°F to 38°F
23°F to 29°F
31°F to 34°F
23°F to 32°F
43°F to 50°F
29°F to 32°F
23°F to 34°F
Map: other cities in the United States (USA) in december
Cities near Philadelphia:
| New Jersey in december | very bad weather |
| Atlantic City in december | very bad weather |
| Wildwood in december | bad weather |
| New York City in december | very bad weather |
| Brooklyn in december | very bad weather |
| Baltimore in december | very bad weather |
| Maryland in december | very bad weather |
| Ocean City (Maryland) in december | bad weather |
| Washington D. C. in december | very bad weather |
| Connecticut in december | very bad weather |
| Albany in december | very bad weather |
| Virginia Beach in december | bad weather |
Click over cities on the map for information about the weather in december.
Philadelphia
perfect weather
good
tolerable
bad
very bad
Weather data for Philadelphia in december:
Weather data for Philadelphia for december are derived from an average of the weather forecast since 2009 in Philadelphia. There is a margin of error and these forecasts are to be considered as general information only. The weather in Philadelphia can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Philadelphia.