Climate in Allentown: average temperature by month
In Allentown the warmest month is July, with 30.3 °C on average in the afternoon; the coolest is January, with 4.4 °C.
The average of the weather stations Newark Liberty Intl Ap (112 km), Ny City Cntrl Park (130 km) and Carlisle Wtp (150 km); nearer ones count more.
| Month | Average high | Coolest to warmest day |
|---|---|---|
| January | 4.4 °C | 3.8 °C – 5.2 °C |
| February | 5.9 °C | 4.5 °C – 7.8 °C |
| March | 10.6 °C | 8.0 °C – 13.4 °C |
| April | 16.7 °C | 13.7 °C – 19.1 °C |
| May | 22.3 °C | 19.3 °C – 25.4 °C |
| June | 27.6 °C | 25.6 °C – 29.8 °C |
| July | 30.3 °C | 29.9 °C – 30.7 °C |
| August | 29.0 °C | 27.9 °C – 29.8 °C |
| September | 25.2 °C | 22.2 °C – 27.8 °C |
| October | 19.1 °C | 16.1 °C – 22.0 °C |
| November | 12.3 °C | 9.1 °C – 15.9 °C |
| December | 6.7 °C | 5.3 °C – 8.9 °C |