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Philadelphia weather in September 2025
Expect 25°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Philadelphia in September. Check more long-term weather averages for Philadelphia in September before you book your next holiday to Pennsylvania in 2025/2026.
- 2525°C max day temperature
- 7 hours of sunshine per day
- 88 days with some rainfall
- 1414°C min night temperature
- 1212 hours of daylight per day
- 0No heat & humidity
- 9191 mm of monthly rainfall
- 66 (High) UV index
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The September weather guide for Pennsylvania (Philadelphia) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about the USA
How hot is it in Philadelphia in September?
Daytime temperatures usually reach 25°C in Philadelphia in September with no heat and humidity, falling to 14°C at night.
How sunny is it in Philadelphia in September?
There are normally 7 hours of bright sunshine each day in Philadelphia in September - that's 58% of daylight hours.
Does it rain in Philadelphia in September?
There are usually 8 days with some rain in Philadelphia in September and the average monthly rainfall is 91mm.
What is the chance of a hurricane in Philadelphia in September?
On average less than 1 day in September in Philadelphia is likely to be affected by the passage of one or more tropical storms.
Philadelphia September sunrise & sunset times
Browse the sunrise and sunset times for Philadelphia in September 2025. Select a month to view Philadelphia sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Monday, 1st September 2025 | 05:29 | 18:32 |
Monday, 15th September 2025 | 05:42 | 18:09 |
Tuesday, 30th September 2025 | 05:56 | 17:44 |
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