Average temperature in January is 11.2 °C
Average daytime temperature is 16.7 °C
Average night temperature is 7.1 °C
Absolute maximum temperature: 23 °C
Absolute minimum temperature: -2.5 °C
Number of sunny days: 16
Number of rainy days: 15
Number of snow days:
Precipitation sum: 202 mm
* Weather data for Allentown United States is based on climate observations for 2023 year
| Gennaio (°C) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperature | 20.5 | 21.2 | 22.2 | 21.4 | 18.8 | 14.4 | 17 | 17.1 | 14.6 | 15.8 | 20.8 | 23 | 15.8 | 8 | 12.3 | 15.1 | 21 | 21 | 22.3 | 17.9 | 12.6 | 13.2 | 12.3 | 12.3 | 17 | 14.9 | 10.1 | 13 | 14.4 | 15.9 | 21.7 |
| Apparent max temperature | 20.1 | 22.3 | 22.7 | 21.9 | 18 | 10.8 | 14.8 | 15 | 12.1 | 12.6 | 19.2 | 19.9 | 13.2 | 2.4 | 9.2 | 11.8 | 19.6 | 21.5 | 21.2 | 15.1 | 9.4 | 13.9 | 9.2 | 8.9 | 16.4 | 13.2 | 6.7 | 10.4 | 14.5 | 16.1 | 22.9 |
| Mean temperature | 15.4 | 13.9 | 17.7 | 19 | 14.4 | 10.2 | 9.1 | 10.9 | 11.2 | 8.6 | 11.7 | 17.7 | 10.7 | 4.3 | 3.8 | 6.4 | 12.6 | 16.3 | 17.8 | 13.6 | 10.4 | 9.1 | 9.2 | 5.1 | 12.6 | 8.2 | 5.2 | 6 | 8 | 12.4 | 14.9 |
| Apparent mean temperature | 11.2 | 7.2 | 14.2 | 17 | 7.1 | 1.5 | 0.7 | 3 | 4.5 | -0.2 | 3.1 | 13.5 | 1.4 | -4.7 | -6.4 | -3.9 | 4.9 | 13.1 | 12.8 | 4.5 | 4.7 | 4.4 | 2 | -4.2 | 4.7 | -0.7 | -3.4 | -4.1 | 0.9 | 9 | 9.9 |
| Minimum temperature | 11.6 | 9 | 14.7 | 16.9 | 9.7 | 4.9 | 3.8 | 5.9 | 7.3 | 2.9 | 5.8 | 14.8 | 7.5 | 1 | -2.5 | 0 | 8.4 | 13 | 14.4 | 8.4 | 7.7 | 7.2 | 5.4 | -0.7 | 8.1 | 3.8 | 0.9 | -0.3 | 3.8 | 10.3 | 10.8 |
| Apparent min temperature | 15.3 | 13.4 | 17.8 | 19.7 | 12 | 6.6 | 6.5 | 8.5 | 8.6 | 5.9 | 9.5 | 16.1 | 6.7 | -1.5 | -0.1 | 3.1 | 9.9 | 16.9 | 16.6 | 9.8 | 7.1 | 7.2 | 5.9 | 1.7 | 10.2 | 4.1 | 1.3 | 2.8 | 5.9 | 11.8 | 15.2 |
| Gennaio | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight duration (h) | 10 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.2 | 10.2 | 10.2 | 10.2 | 10.2 | 10.2 | 10.3 | 10.3 | 10.3 | 10.3 | 10.3 | 10.4 | 10.4 | 10.4 | 10.4 | 10.5 | 10.5 | 10.5 | 10.5 | 10.6 | 10.6 | 10.6 |
| Sunshine duration (h) | 7.1 | 9 | 0.1 | 2.5 | 9.1 | 9.1 | 9.1 | 5.8 | 9.2 | 9.2 | 9 | 5 | 7.9 | 9.3 | 9.4 | 9.3 | 5.6 | 3.8 | 3.7 | 9.4 | 1.6 | 0 | 9.5 | 9.5 | 0 | 9.6 | 9.6 | 9.6 | 0.8 | 0 | 3.1 |
| Precipitation (mm) | 0 | 0 | 0.3 | 70.5 | 0 | 0 | 0 | 0 | 4.4 | 0 | 0 | 0.6 | 18 | 0 | 0 | 0 | 1.3 | 2.8 | 0.5 | 0 | 1.2 | 37.8 | 5.2 | 0 | 27.4 | 0 | 0 | 0 | 0.4 | 30.7 | 0.6 |
| Precipitation hours | 0 | 0 | 3 | 22 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 4 | 4 | 0 | 0 | 0 | 4 | 7 | 3 | 0 | 2 | 20 | 4 | 0 | 11 | 0 | 0 | 0 | 3 | 18 | 6 |
| Wind speed (m/s) | 14.8 | 9.9 | 21.5 | 22.3 | 18.9 | 15.1 | 9 | 9.4 | 16.1 | 10 | 15.9 | 29.6 | 29.3 | 25.2 | 16.5 | 9.7 | 22.7 | 11.3 | 28.8 | 20.6 | 12.3 | 15.2 | 21.2 | 13.5 | 33.5 | 22.3 | 14.2 | 9.4 | 8.8 | 15 | 12.1 |
In January 2023, the highest daytime temperature in Allentown was 23°C.
While the minimum temperature at night dropped to -2.5°C.
The average nighttime and daytime temperatures during January in Allentown are 7.1°C and 16.7°C respectively.
The precipitation sum in January is about 202 mm.