Weather on December 9
Philadelphia, PA
55 Years of Data
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.
| 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° | — | — |
Philadelphia, PA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Philadelphia, PA Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Philadelphia, PA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Philadelphia, PA
Philadelphia, PA has no months that meet our "pleasant" threshold — every season has tradeoffs.