Weather on September 13
Philadelphia, PA
55 Years of Data
Avg High
82°F
Avg Low
64°F
Warmest
2005
84°F avg
Coldest
1985
60°F avg
About This Date
September 13th in Philadelphia, PA typically brings warm fall weather, with average highs around 82°F and lows near 64°F. Over 54 years of records, the warmest September 13th was in 2005 (84°F average), while the coldest was 1985 (60°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 19% of September 13th dates historically, with the wettest September 13th recording 1.27" of rain. 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 September 13th in Philadelphia, PA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 66° | 73° | — | — |
| 2024 | 83° | 64° | 73° | — | — |
| 2023 | 88° | 68° | 78° | — | — |
| 2022 | 88° | 73° | 80° | — | — |
| 2021 | 86° | 65° | 75° | — | — |
| 2020 | 75° | 62° | 69° | — | — |
| 2018 | 84° | 73° | 79° | 0.38" | — |
| 2017 | 83° | 60° | 71° | — | — |
| 2016 | 84° | 64° | 74° | — | — |
| 2015 | 78° | 63° | 70° | 0.13" | — |
| 2014 | 79° | 62° | 70° | — | — |
| 2013 | 89° | 67° | 78° | 1.07" | — |
| 2012 | 81° | 60° | 70° | — | — |
| 2011 | 85° | 68° | 76° | — | — |
| 2010 | 67° | 60° | 63° | 0.08" | — |
| 2009 | 82° | 63° | 72° | — | — |
| 2008 | 87° | 75° | 81° | — | — |
| 2007 | 80° | 61° | 70° | — | — |
| 2006 | 71° | 63° | 67° | 1.27" | — |
| 2005warmest | 98° | 69° | 84° | — | — |
| 2004 | 88° | 66° | 77° | — | — |
| 2003 | 84° | 67° | 75° | 0.58" | — |
| 2002 | 84° | 62° | 73° | — | — |
| 2001 | 86° | 65° | 75° | 0.79" | — |
| 2000 | 81° | 65° | 73° | — | — |
| 1999 | 85° | 67° | 76° | — | — |
| 1998 | 89° | 73° | 81° | — | — |
| 1997 | 81° | 65° | 73° | — | — |
| 1996 | 76° | 59° | 67° | 0.1" | — |
| 1995 | 84° | 69° | 77° | — | — |
| 1994 | 78° | 55° | 67° | — | — |
| 1993 | 84° | 65° | 74° | — | — |
| 1992 | 74° | 54° | 64° | — | — |
| 1991 | 81° | 60° | 70° | — | — |
| 1990 | 81° | 73° | 77° | — | — |
| 1989 | 82° | 71° | 77° | — | — |
| 1988 | 85° | 64° | 74° | — | — |
| 1987 | 78° | 72° | 75° | — | — |
| 1986 | 78° | 60° | 69° | — | — |
| 1985coldest | 68° | 51° | 60° | — | — |
| 1984 | 80° | 64° | 72° | — | — |
| 1983 | 72° | 66° | 69° | — | — |
| 1982 | 87° | 64° | 76° | — | — |
| 1981 | 86° | 68° | 77° | — | — |
| 1980 | 87° | 65° | 76° | — | — |
| 1979 | 78° | 58° | 68° | — | — |
| 1978 | 72° | 57° | 64° | — | — |
| 1977 | 79° | 63° | 71° | — | — |
| 1976 | 91° | 67° | 79° | — | — |
| 1975 | 68° | 53° | 61° | — | — |
| 1974 | 87° | 72° | 79° | 0.15" | — |
| 1973 | 79° | 58° | 68° | — | — |
| 1972 | 83° | 67° | 75° | 0.1" | — |
| 1971 | 76° | 67° | 71° | — | — |
54 years of data from PHILADELPHIA WSFO