Average temperatures, rainfall and packing tips for Philadelphia, United States in September
🌡️ Avg high
25°C
🌙 Avg low
16°C
🌧️ Rainfall
~19 mm
📊 Warmth rank
#4 of 12
September in Philadelphia at a glance
September in Philadelphia is typically warm, with average daytime highs around 25°C and nights near 16°C. Temperature-wise it sits mid-range for Philadelphia (the 4th warmest month).
Rainfall is light in September: roughly 19 mm across the whole month.
What to pack for Philadelphia in September
T-shirts and light layers
A light jacket or sweater for the evenings
Philadelphia - year at a glance
HighLow · September highlighted
Is September a good time to visit Philadelphia?
🧳 September is one of the most comfortable months to visit Philadelphia - daytime temperatures sit in a pleasant range and it's a good pick for sightseeing and time outdoors.
In September, Philadelphia averages a daytime high of about 25°C and a night-time low of around 16°C, based on recent historical data.
Does it rain in Philadelphia in September?
Rainfall is light in September: roughly 19 mm across the whole month.
Is September a good time to visit Philadelphia?
September is one of the most comfortable months to visit Philadelphia - daytime temperatures sit in a pleasant range and it's a good pick for sightseeing and time outdoors.