Weather on August 31
Philadelphia, PA
55 Years of Data
Avg High
84°F
Avg Low
68°F
Warmest
1973
88°F avg
Coldest
1975
64°F avg
About This Date
August 31st in Philadelphia, PA typically brings warm summer weather, with average highs around 84°F and lows near 68°F. Over 55 years of records, the warmest August 31st was in 1973 (88°F average), while the coldest was 1975 (64°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 13% of August 31st dates historically, with the wettest August 31st recording 2.67" 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 31st in Philadelphia, PA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 77° | 58° | 67° | — | — |
| 2024 | 75° | 68° | 72° | — | — |
| 2023 | 86° | 65° | 75° | — | — |
| 2022 | 94° | 71° | 82° | 0.58" | — |
| 2021 | 92° | 74° | 83° | — | — |
| 2020 | 82° | 66° | 74° | — | — |
| 2019 | 89° | 67° | 78° | — | — |
| 2018 | 98° | 74° | 86° | 0.15" | — |
| 2017 | 79° | 60° | 69° | — | — |
| 2016 | 91° | 71° | 81° | — | — |
| 2015 | 90° | 76° | 83° | — | — |
| 2014 | 80° | 73° | 77° | — | — |
| 2013 | 83° | 72° | 77° | — | — |
| 2012 | 88° | 65° | 76° | — | — |
| 2011 | 87° | 68° | 78° | — | — |
| 2010 | 94° | 76° | 85° | — | — |
| 2009 | 75° | 57° | 66° | — | — |
| 2008 | 89° | 65° | 77° | — | — |
| 2007 | 76° | 71° | 73° | — | — |
| 2006 | 72° | 64° | 68° | — | — |
| 2005 | 91° | 74° | 82° | — | — |
| 2004 | 84° | 71° | 78° | — | — |
| 2003 | 81° | 64° | 72° | 0.25" | — |
| 2002 | 80° | 64° | 72° | 0.99" | — |
| 2001 | 90° | 74° | 82° | — | — |
| 2000 | 86° | 74° | 80° | 1.22" | — |
| 1999 | 77° | 62° | 70° | — | — |
| 1998 | 89° | 75° | 82° | — | — |
| 1997 | 85° | 68° | 76° | — | — |
| 1996 | 86° | 68° | 77° | — | — |
| 1995 | 89° | 69° | 79° | — | — |
| 1994 | 80° | 61° | 70° | — | — |
| 1993 | 92° | 72° | 82° | — | — |
| 1992 | 80° | 68° | 74° | — | — |
| 1991 | 88° | 68° | 78° | — | — |
| 1990 | 84° | 69° | 77° | — | — |
| 1989 | 83° | 67° | 75° | — | — |
| 1988 | 80° | 63° | 71° | — | — |
| 1987 | 79° | 61° | 70° | — | — |
| 1986 | 82° | 58° | 70° | — | — |
| 1985 | 72° | 67° | 69° | — | — |
| 1984 | 83° | 71° | 77° | — | — |
| 1983 | 82° | 72° | 77° | — | — |
| 1982 | 82° | 63° | 72° | — | — |
| 1981 | 79° | 68° | 73° | — | — |
| 1980 | 91° | 74° | 82° | — | — |
| 1979 | 88° | 70° | 79° | — | — |
| 1978 | 82° | 64° | 73° | 1.55" | — |
| 1977 | 85° | 70° | 77° | 2.67" | — |
| 1976 | 78° | 56° | 67° | — | — |
| 1975coldest | 67° | 62° | 64° | — | — |
| 1974 | 85° | 69° | 77° | — | — |
| 1973warmest | 99° | 78° | 88° | — | — |
| 1972 | 87° | 67° | 77° | — | — |
| 1971 | 72° | 64° | 68° | — | — |
55 years of data from PHILADELPHIA CITY