Weather on September 9
Philadelphia, PA
55 Years of Data
Avg High
83°F
Avg Low
65°F
Warmest
2015
85°F avg
Coldest
1979
63°F avg
About This Date
September 9th in Philadelphia, PA typically brings warm fall weather, with average highs around 83°F and lows near 65°F. Over 55 years of records, the warmest September 9th was in 2015 (85°F average), while the coldest was 1979 (63°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 20% of September 9th dates historically, with the wettest September 9th recording 4.29" of rain. The last decade has been 2.7°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.7°F cooler on this date compared to 20-30 years ago.
Planning for September 9th in Philadelphia, PA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 77° | 59° | 68° | — | — |
| 2024 | 73° | 57° | 65° | — | — |
| 2023 | 96° | 70° | 83° | — | — |
| 2022 | 80° | 63° | 71° | — | — |
| 2021 | 89° | 69° | 79° | 0.91" | — |
| 2020 | 89° | 67° | 78° | — | — |
| 2019 | 84° | 64° | 74° | — | — |
| 2018 | 70° | 56° | 63° | 4.29" | — |
| 2017 | 74° | 58° | 66° | — | — |
| 2016 | 95° | 74° | 84° | — | — |
| 2015warmest | 94° | 76° | 85° | — | — |
| 2014 | 76° | 67° | 71° | — | — |
| 2013 | 84° | 58° | 71° | — | — |
| 2012 | 89° | 67° | 78° | 1.04" | — |
| 2011 | 86° | 70° | 78° | — | — |
| 2010 | 91° | 62° | 77° | — | — |
| 2009 | 74° | 61° | 67° | 0.08" | — |
| 2008 | 76° | 63° | 69° | 1.5" | — |
| 2007 | 87° | 70° | 78° | — | — |
| 2006 | 86° | 66° | 76° | — | — |
| 2005 | 89° | 68° | 79° | — | — |
| 2004 | 85° | 70° | 77° | — | — |
| 2003 | 75° | 65° | 70° | — | — |
| 2002 | 96° | 66° | 81° | — | — |
| 2001 | 88° | 70° | 79° | — | — |
| 2000 | 89° | 68° | 79° | — | — |
| 1999 | 87° | 69° | 78° | 4.09" | — |
| 1998 | 72° | 56° | 64° | — | — |
| 1997 | 77° | 66° | 72° | — | — |
| 1996 | 88° | 70° | 79° | 1.63" | — |
| 1995 | 88° | 66° | 77° | 0.2" | — |
| 1994 | 82° | 62° | 72° | — | — |
| 1993 | 81° | 65° | 73° | 0.58" | — |
| 1992 | 86° | 71° | 79° | — | — |
| 1991 | 86° | 68° | 77° | — | — |
| 1990 | 69° | 58° | 63° | — | — |
| 1989 | 87° | 67° | 77° | — | — |
| 1988 | 83° | 66° | 74° | — | — |
| 1987 | 84° | 70° | 77° | — | — |
| 1986 | 78° | 56° | 67° | — | — |
| 1985 | 92° | 74° | 83° | — | — |
| 1984 | 79° | 60° | 69° | — | — |
| 1983 | 89° | 68° | 79° | — | — |
| 1982 | 77° | 61° | 69° | — | — |
| 1981 | 84° | 60° | 72° | — | — |
| 1980 | 85° | 67° | 76° | — | — |
| 1979coldest | 73° | 54° | 63° | — | — |
| 1978 | 76° | 57° | 66° | — | — |
| 1977 | 76° | 62° | 69° | 0.25" | — |
| 1976 | 87° | 68° | 78° | — | — |
| 1975 | 73° | 62° | 68° | — | — |
| 1974 | 79° | 64° | 71° | — | — |
| 1973 | 81° | 63° | 72° | — | — |
| 1972 | 84° | 63° | 73° | 0.05" | — |
| 1971 | 92° | 73° | 82° | — | — |
55 years of data from PHILADELPHIA CITY