Weather on December 9
Philadelphia, PA
55 Years of Data
Avg High
47°F
Avg Low
33°F
Warmest
1980
54°F avg
Coldest
1989
24°F avg
About This Date
December 9th in Philadelphia, PA typically brings chilly winter weather, with average highs around 47°F and lows near 33°F. Over 55 years of records, the warmest December 9th was in 1980 (54°F average), while the coldest was 1989 (24°F) — a 30°F range across recorded history. Precipitation has occurred on 24% of recorded December 9th dates, with snow falling 4% of the time (heaviest snowfall: 2.5"). Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for December 9th in Philadelphia, PA? Bring layers as temperatures can vary throughout the day.
Cooling Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 31° | 19° | 25° | — | — |
| 2024 | 58° | 41° | 49° | — | — |
| 2023 | 54° | 40° | 47° | — | — |
| 2022 | 54° | 36° | 45° | — | — |
| 2021 | 42° | 32° | 37° | — | — |
| 2020 | 41° | 32° | 37° | — | — |
| 2019 | 44° | 29° | 36° | — | — |
| 2018 | 38° | 29° | 33° | — | — |
| 2017 | 42° | 34° | 38° | — | — |
| 2016 | 45° | 32° | 38° | — | — |
| 2015 | 50° | 37° | 44° | — | — |
| 2014 | 38° | 27° | 32° | 1.8" | — |
| 2013 | 35° | 26° | 31° | 2.69" | 2.5" |
| 2012 | 51° | 35° | 43° | 0.2" | — |
| 2011 | 51° | 36° | 43° | — | — |
| 2010 | 35° | 24° | 30° | — | — |
| 2009 | 51° | 39° | 45° | 5.36" | — |
| 2008 | 63° | 40° | 51° | 0.15" | — |
| 2007 | 40° | 35° | 37° | 0.18" | — |
| 2006 | 40° | 21° | 30° | — | — |
| 2005 | 49° | 26° | 37° | — | — |
| 2004 | 49° | 44° | 46° | 1.55" | — |
| 2003 | 39° | 32° | 36° | 0.03" | — |
| 2002 | 35° | 24° | 30° | — | — |
| 2001 | 48° | 38° | 43° | — | — |
| 2000 | 39° | 31° | 35° | — | — |
| 1999 | 58° | 38° | 48° | — | — |
| 1998 | 50° | 41° | 46° | — | — |
| 1997 | 41° | 34° | 37° | — | — |
| 1996 | 39° | 34° | 36° | — | — |
| 1995 | 35° | 29° | 32° | 0.71" | 2" |
| 1994 | 41° | 29° | 35° | — | — |
| 1993 | 49° | 33° | 41° | — | — |
| 1992 | 39° | 25° | 32° | — | — |
| 1991 | 65° | 44° | 54° | — | — |
| 1990 | 51° | 38° | 44° | — | — |
| 1989coldest | 30° | 18° | 24° | — | — |
| 1988 | 41° | 30° | 36° | — | — |
| 1987 | 62° | 36° | 49° | — | — |
| 1986 | 57° | 40° | 48° | — | — |
| 1985 | 55° | 38° | 46° | — | — |
| 1984 | 54° | 34° | 44° | — | — |
| 1983 | 45° | 35° | 40° | — | — |
| 1982 | 47° | 24° | 35° | — | — |
| 1981 | 40° | 31° | 35° | — | — |
| 1980warmest | 65° | 43° | 54° | — | — |
| 1979 | 41° | 32° | 37° | — | — |
| 1978 | 61° | 34° | 47° | — | — |
| 1977 | 42° | 19° | 31° | 0.13" | — |
| 1976 | 37° | 22° | 29° | — | — |
| 1975 | 54° | 38° | 46° | 0.3" | — |
| 1974 | 48° | 31° | 39° | — | — |
| 1973 | 52° | 39° | 45° | 2.49" | — |
| 1972 | 50° | 43° | 46° | 0.25" | — |
| 1971 | 51° | 43° | 47° | — | — |
55 years of data from PHILADELPHIA CITY