Is Philadelphia hot in August?
Days are typically hot at 30.5°C, while nights average 21.2°C.
United States · 1991–2020 normal
Philadelphia in
August.
Typical August weather in Philadelphia: 30.5°C by day, 21.2°C at night, 126 mm of rain over 7.8 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high30.5°C
Typical low21.2°C
Rain126 mm
Wet days7.8
In the year-round weather comparison, August scores 50 out of 100 (May leads the year at 80). Daylight is calculated as 13 h 45 from latitude 39.95°.
August at a glance
What is Philadelphia like in August?
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Does it rain much?
The measured monthly average is 126 mm across about 8 wet days.
How much daylight is there?
There are about 13 h 45 between sunrise and sunset at mid-month, calculated from the place latitude.
Is August a good time to visit?
August ranks 6 of 12 in our weather comparison; May ranks first.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4560349
- NOAA station
- USC00366886 · PHILA FRANKLIN INST
- Station distance
- 1 km from the place centre
- Coverage
- Strong coverage · 27 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for Philadelphia is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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