Climate in Philadelphia: average temperature by month
In Philadelphia the warmest month is July, with 30.6 °C on average in the afternoon; the coolest is January, with 5.8 °C.
The average of the weather stations Dover (94 km), Newark Liberty Intl Ap (117 km) and Ny City Cntrl Park (137 km); nearer ones count more.
| Month | Average high | Coolest to warmest day |
|---|---|---|
| January | 5.8 °C | 5.2 °C – 6.5 °C |
| February | 7.4 °C | 5.9 °C – 9.1 °C |
| March | 11.9 °C | 9.3 °C – 14.8 °C |
| April | 17.8 °C | 14.9 °C – 20.1 °C |
| May | 22.9 °C | 20.2 °C – 25.7 °C |
| June | 27.9 °C | 25.9 °C – 30.0 °C |
| July | 30.6 °C | 30.2 °C – 30.9 °C |
| August | 29.4 °C | 28.4 °C – 30.2 °C |
| September | 25.9 °C | 23.1 °C – 28.3 °C |
| October | 20.0 °C | 17.2 °C – 22.8 °C |
| November | 13.5 °C | 10.5 °C – 17.0 °C |
| December | 8.0 °C | 6.6 °C – 10.3 °C |