Average temperature in January is 3.5 °C
Average daytime temperature is 6 °C
Average night temperature is 0.7 °C
Absolute maximum temperature: 18.4 °C
Absolute minimum temperature: -10.2 °C
Number of sunny days: 4
Number of rainy days: 19
Number of snow days: 8
Precipitation sum: 92 mm
* Weather data for Porrentruy Switzerland 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 | 18.4 | 13.8 | 9.2 | 9.7 | 10.8 | 10 | 13.1 | 9.4 | 7.6 | 8.7 | 11.2 | 9.8 | 9.2 | 11.1 | 11 | 6.5 | 2.7 | 0.6 | 0.2 | -0.4 | -1.3 | -0.4 | 1.1 | 1.7 | 1.5 | 0.6 | -0.6 | 1.5 | 2.1 | 2.9 | 4.6 |
| Apparent max temperature | 17.8 | 11.9 | 7.2 | 5.8 | 8.4 | 8.2 | 10.5 | 7.2 | 3 | 4.5 | 6.9 | 4.6 | 4.2 | 6.4 | 5.2 | 0.1 | -0.6 | -3.1 | -3.4 | -4.1 | -6.4 | -4.9 | -4.2 | -1.9 | -1.6 | -2 | -6 | -4 | -0.9 | -1.7 | -0.2 |
| Mean temperature | 14.5 | 10.9 | 6.4 | 7.6 | 9.1 | 8.5 | 6.4 | 7.9 | 4.6 | 4.8 | 8.5 | 7.7 | 7.3 | 8.4 | 5.6 | 4 | 1.4 | -0.6 | -4.2 | -5.6 | -4.5 | -1.9 | -0.4 | 1.3 | 1 | -0.7 | -2.1 | -0.8 | -0.9 | 0.5 | 2.5 |
| Apparent mean temperature | 6.2 | 5.8 | -1 | 0.4 | 3.9 | 3.3 | -0.4 | 2.7 | -2.4 | -2.3 | 1.5 | 0.8 | 0.5 | 1.4 | -2.7 | -3.4 | -4.7 | -8.4 | -14 | -14.3 | -14.8 | -7.6 | -7 | -3.9 | -3.3 | -7 | -7.8 | -7.3 | -6.6 | -6.9 | -2.1 |
| Minimum temperature | 9.2 | 7.8 | 1.7 | 3.6 | 6.3 | 5.6 | 2.5 | 6.1 | 2.4 | 2.1 | 5.6 | 5.3 | 4.8 | 5.3 | 2.6 | 1.7 | -1 | -4 | -10.1 | -10.2 | -10 | -2.9 | -1.9 | 0.7 | 0.3 | -2.7 | -3.2 | -2.3 | -2.8 | -2.4 | 1.1 |
| Apparent min temperature | 11.5 | 8.2 | 4.5 | 3.4 | 6.2 | 6.6 | 3.8 | 4.7 | -0.4 | 0.7 | 4.5 | 2.8 | 2.5 | 4 | 0.3 | -2.1 | -2.5 | -4.4 | -8.3 | -9.7 | -9.3 | -6.3 | -5.8 | -2.9 | -2.5 | -4.3 | -7 | -5.8 | -4.7 | -3.8 | -1.2 |
| 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) | 8.5 | 8.5 | 8.6 | 8.6 | 8.6 | 8.6 | 8.7 | 8.7 | 8.7 | 8.7 | 8.8 | 8.8 | 8.8 | 8.8 | 8.9 | 8.9 | 8.9 | 9 | 9 | 9.1 | 9.1 | 9.1 | 9.2 | 9.2 | 9.3 | 9.3 | 9.3 | 9.4 | 9.4 | 9.5 | 9.5 |
| Sunshine duration (h) | 7.2 | 4 | 3.6 | 0 | 2.1 | 3.4 | 7.4 | 1.2 | 4.7 | 5 | 0.8 | 0 | 3.5 | 0 | 1.7 | 3.1 | 1 | 0 | 4.1 | 7.8 | 5.8 | 0 | 0 | 1.3 | 0 | 0.1 | 1.2 | 0 | 6.6 | 0.7 | 3.9 |
| Precipitation (mm) | 0 | 3 | 1 | 1.8 | 4.9 | 0.8 | 0 | 13 | 11.3 | 1.2 | 4.6 | 0.1 | 6.1 | 5.2 | 13.3 | 4.3 | 9.4 | 3.7 | 0 | 0 | 1.3 | 2.4 | 1.5 | 0.3 | 0.3 | 0.5 | 0.2 | 0.7 | 0.1 | 0.9 | 0.1 |
| Precipitation hours | 0 | 9 | 4 | 5 | 11 | 6 | 0 | 17 | 18 | 7 | 9 | 1 | 15 | 10 | 10 | 15 | 14 | 14 | 0 | 0 | 7 | 20 | 11 | 3 | 3 | 5 | 2 | 4 | 1 | 5 | 1 |
| Wind speed (m/s) | 20.6 | 20.3 | 7.9 | 23.6 | 22.5 | 12.2 | 9.8 | 20.4 | 27.5 | 19.5 | 23.4 | 26 | 29.3 | 29.8 | 32.3 | 34.6 | 18.3 | 14.6 | 12 | 9.8 | 22.7 | 15.3 | 28.1 | 19.4 | 13.2 | 11.1 | 19.5 | 21.9 | 15.1 | 18.3 | 17.6 |
In January 2023, the highest daytime temperature in Porrentruy was 18.4°C.
While the minimum temperature at night dropped to -10.2°C.
The average nighttime and daytime temperatures during January in Porrentruy are 0.7°C and 6°C respectively.
The precipitation sum in January is about 92 mm.