Weather on August 11
Philadelphia, PA
55 Years of Data
Avg High
87°F
Avg Low
70°F
Warmest
2005
88°F avg
Coldest
1989
66°F avg
About This Date
August 11th in Philadelphia, PA typically brings warm summer weather, with average highs around 87°F and lows near 70°F. Over 55 years of records, the warmest August 11th was in 2005 (88°F average), while the coldest was 1989 (66°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 16% of August 11th dates historically, with the wettest August 11th recording 3.56" 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 11th 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 | 90° | 69° | 79° | — | — |
| 2024 | 89° | 71° | 80° | — | — |
| 2023 | 79° | 70° | 74° | — | — |
| 2022 | 93° | 73° | 83° | 1.63" | — |
| 2021 | 92° | 72° | 82° | — | — |
| 2020 | 96° | 76° | 86° | — | — |
| 2019 | 87° | 66° | 77° | — | — |
| 2018 | 93° | 75° | 84° | — | — |
| 2017 | 86° | 78° | 82° | — | — |
| 2016 | 93° | 76° | 84° | — | — |
| 2015 | 80° | 70° | 75° | 1.8" | — |
| 2014 | 91° | 69° | 80° | — | — |
| 2013 | 85° | 69° | 77° | — | — |
| 2012 | 83° | 70° | 76° | 3.05" | — |
| 2011 | 85° | 65° | 75° | — | — |
| 2010 | 96° | 78° | 87° | 0.03" | — |
| 2009 | 91° | 75° | 83° | — | — |
| 2008 | 75° | 62° | 69° | — | — |
| 2007 | 85° | 60° | 72° | — | — |
| 2006 | 82° | 64° | 73° | — | — |
| 2005warmest | 100° | 76° | 88° | — | — |
| 2004 | 89° | 75° | 82° | — | — |
| 2003 | 88° | 75° | 81° | — | — |
| 2002 | 95° | 70° | 82° | — | — |
| 2001 | 80° | 74° | 77° | 0.36" | — |
| 2000 | 86° | 69° | 78° | 0.28" | — |
| 1999 | 91° | 72° | 81° | — | — |
| 1998 | 89° | 73° | 81° | — | — |
| 1997 | 91° | 71° | 81° | — | — |
| 1996 | 82° | 61° | 71° | — | — |
| 1995 | 89° | 69° | 79° | — | — |
| 1994 | 83° | 63° | 73° | — | — |
| 1993 | 82° | 66° | 74° | — | — |
| 1992 | 91° | 68° | 80° | — | — |
| 1991 | 82° | 69° | 76° | — | — |
| 1990 | 86° | 71° | 79° | — | — |
| 1989coldest | 69° | 62° | 66° | — | — |
| 1988 | 92° | 76° | 84° | — | — |
| 1987 | 87° | 66° | 77° | — | — |
| 1986 | 83° | 75° | 79° | — | — |
| 1985 | 88° | 70° | 79° | — | — |
| 1984 | 85° | 73° | 79° | — | — |
| 1983 | 90° | 68° | 79° | — | — |
| 1982 | 77° | 61° | 69° | — | — |
| 1981 | 89° | 76° | 82° | — | — |
| 1980 | 93° | 73° | 83° | — | — |
| 1979 | 81° | 61° | 71° | — | — |
| 1978 | 84° | 69° | 77° | 3.56" | — |
| 1977 | 90° | 74° | 82° | 0.03" | — |
| 1976 | 87° | 68° | 78° | — | — |
| 1975 | 87° | 72° | 79° | — | — |
| 1974 | 82° | 59° | 71° | — | — |
| 1973 | 89° | 77° | 83° | 0.1" | — |
| 1972 | 80° | 58° | 69° | — | — |
| 1971 | 87° | 76° | 81° | — | — |
55 years of data from PHILADELPHIA WSFO