Weather on May 15
Philadelphia, PA
55 Years of Data
Avg High
74°F
Avg Low
56°F
Warmest
1991
78°F avg
Coldest
1978
52°F avg
About This Date
May 15th in Philadelphia, PA typically brings pleasant spring weather, with average highs around 74°F and lows near 56°F. Over 54 years of records, the warmest May 15th was in 1991 (78°F average), while the coldest was 1978 (52°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 24% of May 15th dates historically, with the wettest May 15th recording 24.38" 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 May 15th in Philadelphia, PA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 63° | 60° | 61° | — | — |
| 2024 | 75° | 59° | 67° | — | — |
| 2023 | 78° | 53° | 66° | — | — |
| 2022 | 77° | 64° | 71° | — | — |
| 2021 | 77° | 54° | 65° | — | — |
| 2019 | 57° | 46° | 52° | 0.08" | — |
| 2018 | 77° | 58° | 67° | — | — |
| 2017 | 73° | 52° | 62° | — | — |
| 2016 | 77° | 56° | 66° | 0.2" | — |
| 2015 | 74° | 55° | 64° | — | — |
| 2014 | 70° | 54° | 62° | — | — |
| 2013 | 63° | 51° | 57° | — | — |
| 2012 | 71° | 64° | 68° | 1.27" | — |
| 2011 | 77° | 62° | 70° | 0.28" | — |
| 2010 | 84° | 61° | 72° | 0.28" | — |
| 2009 | 81° | 62° | 71° | — | — |
| 2008 | 79° | 58° | 68° | 0.79" | — |
| 2007 | 81° | 56° | 68° | — | — |
| 2006 | 74° | 54° | 64° | 24.38" | — |
| 2005 | 80° | 66° | 73° | — | — |
| 2004 | 88° | 68° | 78° | 0.25" | — |
| 2003 | 64° | 54° | 59° | — | — |
| 2002 | 70° | 49° | 59° | — | — |
| 2001 | 75° | 50° | 63° | — | — |
| 2000 | 68° | 53° | 61° | — | — |
| 1999 | 72° | 50° | 61° | — | — |
| 1998 | 89° | 57° | 73° | — | — |
| 1997 | 76° | 55° | 65° | 0.1" | — |
| 1996 | 68° | 48° | 58° | — | — |
| 1995 | 62° | 53° | 58° | 0.84" | — |
| 1994 | 71° | 54° | 62° | — | — |
| 1993 | 79° | 53° | 66° | — | — |
| 1992 | 67° | 53° | 60° | — | — |
| 1991warmest | 86° | 69° | 78° | — | — |
| 1990 | 76° | 55° | 65° | — | — |
| 1989 | 74° | 54° | 64° | — | — |
| 1988 | 75° | 50° | 63° | — | — |
| 1987 | 73° | 56° | 64° | — | — |
| 1986 | 65° | 55° | 60° | — | — |
| 1985 | 71° | 50° | 61° | — | — |
| 1984 | 61° | 51° | 56° | — | — |
| 1983 | 82° | 58° | 70° | — | — |
| 1982 | 79° | 55° | 67° | — | — |
| 1981 | 80° | 60° | 70° | — | — |
| 1980 | 69° | 53° | 61° | — | — |
| 1979 | 76° | 57° | 66° | — | — |
| 1978coldest | 54° | 50° | 52° | 0.23" | — |
| 1977 | 74° | 52° | 63° | — | — |
| 1976 | 82° | 68° | 75° | — | — |
| 1975 | 79° | 61° | 70° | 0.05" | — |
| 1974 | 82° | 63° | 72° | — | — |
| 1973 | 59° | 53° | 56° | — | — |
| 1972 | 71° | 60° | 66° | 0.69" | — |
| 1971 | 68° | 53° | 61° | — | — |
54 years of data from PHILADELPHIA WSFO