Weather on August 15
Philadelphia, PA
55 Years of Data
Avg High
86°F
Avg Low
70°F
Warmest
1988
89°F avg
Coldest
1992
63°F avg
About This Date
August 15th in Philadelphia, PA typically brings warm summer weather, with average highs around 86°F and lows near 70°F. Over 55 years of records, the warmest August 15th was in 1988 (89°F average), while the coldest was 1992 (63°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 18% of August 15th dates historically, with the wettest August 15th recording 2.06" 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 August 15th 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 | 90° | 76° | 83° | — | — |
| 2024 | 89° | 68° | 79° | — | — |
| 2023 | 94° | 75° | 84° | — | — |
| 2022 | 87° | 70° | 78° | — | — |
| 2021 | 94° | 77° | 85° | — | — |
| 2020 | 87° | 71° | 79° | — | — |
| 2019 | 80° | 72° | 76° | 2.06" | — |
| 2018 | 84° | 72° | 78° | 0.48" | — |
| 2017 | 85° | 68° | 76° | — | — |
| 2016 | 98° | 76° | 87° | — | — |
| 2015 | 90° | 71° | 80° | — | — |
| 2014 | 80° | 59° | 70° | 1.07" | — |
| 2013 | 76° | 60° | 68° | — | — |
| 2012 | 81° | 71° | 76° | 1.6" | — |
| 2011 | 82° | 67° | 74° | 0.66" | — |
| 2010 | 85° | 71° | 78° | — | — |
| 2009 | 90° | 72° | 81° | — | — |
| 2008 | 83° | 65° | 74° | — | — |
| 2007 | 87° | 68° | 78° | — | — |
| 2006 | 88° | 68° | 78° | — | — |
| 2005 | 88° | 75° | 81° | — | — |
| 2004 | 82° | 70° | 76° | 0.99" | — |
| 2003 | 95° | 77° | 86° | — | — |
| 2002 | 96° | 76° | 86° | — | — |
| 2001 | 88° | 70° | 79° | — | — |
| 2000 | 87° | 62° | 75° | — | — |
| 1999 | 85° | 71° | 78° | — | — |
| 1998 | 90° | 72° | 81° | — | — |
| 1997 | 91° | 70° | 80° | — | — |
| 1996 | 86° | 68° | 77° | — | — |
| 1995 | 93° | 75° | 84° | 0.61" | — |
| 1994 | 91° | 62° | 77° | 1.52" | — |
| 1993 | 92° | 70° | 81° | — | — |
| 1992coldest | 67° | 60° | 63° | — | — |
| 1991 | 79° | 71° | 75° | — | — |
| 1990 | 86° | 71° | 79° | — | — |
| 1989 | 82° | 73° | 78° | — | — |
| 1988warmest | 98° | 80° | 89° | — | — |
| 1987 | 88° | 70° | 79° | — | — |
| 1986 | 87° | 68° | 78° | — | — |
| 1985 | 93° | 77° | 85° | — | — |
| 1984 | 87° | 76° | 81° | — | — |
| 1983 | 86° | 64° | 75° | — | — |
| 1982 | 85° | 65° | 75° | — | — |
| 1981 | 86° | 74° | 80° | — | — |
| 1980 | 82° | 72° | 77° | — | — |
| 1979 | 69° | 60° | 65° | — | — |
| 1978 | 89° | 75° | 82° | — | — |
| 1977 | 85° | 70° | 77° | — | — |
| 1976 | 83° | 69° | 76° | 0.08" | — |
| 1975 | 88° | 71° | 79° | — | — |
| 1974 | 84° | 67° | 75° | — | — |
| 1973 | 88° | 73° | 80° | 1.8" | — |
| 1972 | 77° | 65° | 71° | — | — |
| 1971 | 90° | 69° | 79° | — | — |
55 years of data from PHILADELPHIA CITY