Average annual temperature is 13.4 °C
Absolute maximum temperature: 33.0 °C
Absolute minimum temperature: -8.7 °C
Number of sunny days: 172 days
Number of rainy days: 188 days
Number of snow days: 5 days
Look at detailed online map of Allentown
* Weather data for 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) | 20.0 | 23.3 | 23.8 | 28.9 | 28.2 | 32.2 | 33.0 | 31.5 | 31.8 | 27.4 | 24.0 | 18.7 |
| Average daytime temperature (°C) | 10.0 | 13.4 | 13.1 | 19.9 | 22.7 | 26.6 | 29.2 | 27.7 | 24.8 | 19.6 | 13.5 | 10.6 |
| Average temperature (°C) | 4.8 | 6.6 | 6.7 | 12.9 | 16.4 | 20.3 | 23.5 | 22.3 | 19.3 | 14.2 | 7.2 | 5.6 |
| Average night temperature (°C) | 1.4 | 1.8 | 1.7 | 6.9 | 10.8 | 14.6 | 18.9 | 17.8 | 14.7 | 9.9 | 2.6 | 2.1 |
| Absolute minimum temperature (°C) | -7.0 | -8.7 | -8.1 | -0.3 | 3.1 | 9.6 | 14.8 | 12.4 | 9.5 | 1.4 | -7.1 | -5.6 |
| 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 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.8 | 10.8 | 12.0 | 13.2 | 14.3 | 14.8 | 14.6 | 13.6 | 12.4 | 11.2 | 10.1 | 9.5 |
| 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) | 4.2 | 6.8 | 7.5 | 8.9 | 9.8 | 11.0 | 11.8 | 10.7 | 9.5 | 7.4 | 7.2 | 5.1 |
| Precipitation (mm) | 107 | 93 | 94 | 71 | 65 | 58 | 117 | 131 | 87 | 59 | 53 | 89 |
| Sunny days | 7 | 15 | 15 | 18 | 18 | 15 | 6 | 10 | 15 | 16 | 21 | 16 |
| Rainy days | 22 | 12 | 15 | 12 | 13 | 15 | 25 | 21 | 15 | 15 | 8 | 15 |
| Snow days | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
The best time to visit Allentown during the most sunny months:
The largest precipitation sum in Allentown is at