Average annual temperature is 12.7 °C
Absolute maximum temperature: 34.9 °C
Absolute minimum temperature: -13.7 °C
Number of sunny days: 182 days
Number of rainy days: 176 days
Number of snow days: 7 days
Look at detailed online map of City of Allentown
* Weather data for City of Allentown United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 18.1 | 17.7 | 17.5 | 30.9 | 30.2 | 34.9 | 33.3 | 31.5 | 34.5 | 28.0 | 20.5 | 16.0 |
| Average daytime temperature (°C) | 8.1 | 9.1 | 10.5 | 19.2 | 22.9 | 26.5 | 30.1 | 27.7 | 24.4 | 19.3 | 11.1 | 8.6 |
| Average temperature (°C) | 4.3 | 3.4 | 4.7 | 12.6 | 15.8 | 20.3 | 24.4 | 22.5 | 19.3 | 13.9 | 5.6 | 4.5 |
| Average night temperature (°C) | 0.8 | -1.3 | -0.2 | 7.0 | 8.7 | 14.7 | 19.5 | 17.8 | 15.0 | 9.3 | 1.1 | 0.9 |
| Absolute minimum temperature (°C) | -5.0 | -13.7 | -5.4 | -2.3 | 3.1 | 8.5 | 14.7 | 13.1 | 9.4 | 3.2 | -5.0 | -4.9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.3 | 6.7 | 7.3 | 8.4 | 11.5 | 10.6 | 11.7 | 10.2 | 8.0 | 8.0 | 7.3 | 4.4 |
| Precipitation (mm) | 112 | 36 | 80 | 100 | 29 | 155 | 96 | 87 | 148 | 56 | 71 | 181 |
| Sunny days | 12 | 17 | 10 | 16 | 21 | 15 | 9 | 13 | 15 | 20 | 18 | 16 |
| Rainy days | 18 | 9 | 20 | 14 | 10 | 15 | 22 | 18 | 15 | 11 | 11 | 13 |
| Snow days | 1 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
The best time to visit City of Allentown during the most sunny months:
The largest precipitation sum in City of Allentown is at