Philadelphia weather in September (Pennsylvania, United States of America)
Looking to travel to Philadelphia in September? Here's what the weather might have in store during this month.
In September, Philadelphia generally has high temperatures and high rainfall. Throughout the day, temperatures typically settle at around 26°C. But by evening, they drop to around 17°C.
Philadelphia in September usually receives high rainfall, averaging around 108 mm for the month. Typically around 8 days of rainfall is expected.
The city usually sees around 218 hours of sunlight, indicating many sunny days.
Should you favor a climate that's both dry and comfortably warm May typically offers the most agreeable circumstances. On the other hand, January, February and December tend to be characterized by conditions that may not be as optimal.
For an in-depth look at the yearly conditions, visit our specialized Philadelphia climate page with graphs.
Philadelphia, monthly averages in September
Min Temperature
17°C
Max Temperature
26°C
Water Temperature
22°C
Chance of Rain
28%
Precipitation
108 mm
Rainy days
8 days
Humidity
72%
Sunshine
218 hours
Percentage Sunshine
59%
Where to go in the United States of America in September
Find out more about the weather in the United States of America in September and which places have the best weather conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in Philadelphia in September?
It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case. With a water temperature of around 22°C this is a great month to swim so bring your swimwear.What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do in September.
Interested in more climate information?
Weather and Climate provides you with all the information you need about the climate in Philadelphia.
Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.
