Mild
Average highs are around 25°C, so days are mild rather than hot.
September verdict
Philadelphia, Pennsylvania, United States in September
Weather score66Good
Good for holiday weather
Average highs are around 25°C, so days are mild rather than hot. Sunshine averages 7.2h per day, enough for a balanced month. Rainfall averages 91mm, so some wet days are possible.
September weather
Monthly averages
Temp
25°C
Rain
91mm
Sun
7.2h
Weather score
66
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 91mm, so some wet days are possible.
Some sun
Sunshine averages 7.2h per day, enough for a balanced month.
Map
Weather map
Compare Philadelphia, Pennsylvania, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September25°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
September91mm average rain
September sits near Philadelphia's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to June and August to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September7.2 hours average sun
September sits close to Philadelphia's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
September66 weather score
September scores above Philadelphia's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
Hotels in Philadelphia, Pennsylvania, United States
Marriott
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The Ritz-Carlton, PhiladelphiaPhiladelphia, Pennsylvania, USA
W PhiladelphiaPhiladelphia, Pennsylvania, USA
Philadelphia Airport MarriottPhiladelphia, Pennsylvania, USA
Philadelphia Marriott DowntownPhiladelphia, Pennsylvania, USA
Philadelphia Marriott Old CityPhiladelphia, Pennsylvania, USA
Renaissance Philadelphia Downtown HotelPhiladelphia, Pennsylvania, USA