Weather in Philadelphia: September
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Average day temperature: | 76.5°F |
| Average night temperature: | 64.4°F | |
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Number of sunny days: | 12 days |
| Day length: | 11.8 - 13.1 hours | |
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Number of rainy days: | 3 days |
| Precipitation totals: | 1.9 in. | |
| more information | ||
14 days
forecast
forecast
| Philadelphia |
weather in
October
October
| Philadelphia |
Air temperature in September, °F
Show year:
2025
2024
2023
The highest day temperature during September of 2025 was 90°F. At the same time the lowest night temperature was 56°F. Daily and nightly averages during September were 79.7°F and 64.3°F.
Sunny, partly cloudy and cloudy days
Number of sunny, partly cloudy and cloudy days in September is almost equal.
Precipitation total in September, in.
Precipitation total value in Philadelphia in September is 1.3 in. Other months of the year show relatively similar values.
Wind speed in September, mph
The average wind speed value in September is 6.6 mph It makes September one of the least windy months of the year.
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 7.3.
Best time for vacation in Philadelphia
Philadelphia on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Philadelphia
Local time: 23:16
December 05, friday
0000
28°F
S
9 mph
9 mph
0300
27°F
SW
6 mph
6 mph
0600
25°F
SW
5 mph
5 mph
0900
25°F
NW
4 mph
4 mph
1200
27°F
N
5 mph
5 mph
1500
28°F
NW
2 mph
2 mph
1800
30°F
SW
1 mph
1 mph
2100
28°F
SW
2 mph
2 mph
