Weather in Philadelphia in October
October in Philadelphia is cool with average temperatures around 13.8°C (56.8°F). Expect significant rainfall with 110mm across approximately 9 days.
Data Note: Temperature values are 2001–2020 satellite/reanalysis grid averages from NASA POWER and may differ from airport station normals by a few degrees.
Temperature
High
19.3°C
66.7°F
Low
8.4°C
47.1°F
Precipitation
110 mm
4.3 inches
~9 rainy days
Conditions
Humidity
78%
Comparison to Adjacent Months
October is 6.8°C cooler than September.
October is 6.3°C warmer than November.