Philadelphia Weather in September
26.2°C high · 14.7°C low · 99 mm rain · 6.7h sun
Yes — Sep is one of the best months to visit Philadelphia, with mild weather and 6.7h of daily sunshine.
September at a glance
| Metric | Value |
|---|---|
| Average high | 26.2°C |
| Average low | 14.7°C |
| Rainfall | 99 mm |
| Sunshine | 6.7 hours/day |
| Daylight | 12.2 hours |
What to pack in September
Pack comfortable clothes with a light layer for evenings, plus a raincoat and umbrella for Philadelphia in September.
Philadelphia weather by month
JanFebMarAprMayJunJulAugSepOctNovDec
Frequently asked questions
What is the weather in Philadelphia in September?
Highs of 26.2°C and lows of 14.7°C, with about 99 mm of rain and 6.7 hours of sunshine per day.
Is September a good time to visit Philadelphia?
Yes — Sep is one of the best months to visit Philadelphia, with mild weather and 6.7h of daily sunshine.
What to do in Philadelphia · Best time to visit Philadelphia
Climate data: Open-Meteo Historical (ERA5), 1991–2020. CC BY 4.0.