ClimateAverages

Philadelphia Weather in September

JanFebMarAprMayJunJulAugSepOctNovDec
Right now
23°C
Light rain · feels like 26°C
Humidity
87%
Wind
9 kph SSW
UV
0.4
Rain
0%
Updated Jul 9, 07:45 AMWeather data by WeatherAPI.com
September daytime high
25.8°C
September overnight low
13.8°C
September average
19.8°C

In September, Philadelphia typically sees daytime highs of 25.8°C and overnight lows around 13.8°C. Compared to the annual average high of 17.9°C, September runs +7.9°C.

vs. annual avg high
+7.9°C
Rank among 12 months
#4 warmest
Hottest year overall
2011

Where September ranks in Philadelphia

JanFebMarAprMayJunJulAugSep26°OctNovDec

FAQ

What is the average temperature in Philadelphia in September?

September in Philadelphia averages a daytime high of 25.8°C and an overnight low of 13.8°C.

Is September warm or cold in Philadelphia?

September runs +7.9°C compared to Philadelphia's annual average high of 17.9°C, ranking #4 of 12 months by warmth.

What should I pack for Philadelphia in September?

Plan for daytime highs near 25.8°C and cooler evenings around 13.8°C.

Other months for Philadelphia

JanuaryFebruaryMarchAprilMayJuneJulyAugustOctoberNovemberDecember

September in nearby cities

PittsburghAllentownErieReadingScrantonBethlehemLancasterLevittown