Average temperature in January is -1.4 °C
Average daytime temperature is 3 °C
Average night temperature is -4.2 °C
Absolute maximum temperature: 14.1 °C
Absolute minimum temperature: -15.5 °C
Number of sunny days: 13
Number of rainy days: 7
Number of snow days: 11
Precipitation sum: 58 mm
* Weather data for Washington 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 | 7.3 | 6.5 | 14.1 | 5 | 0.7 | 0.7 | 0.3 | 1.8 | 8.2 | 6.1 | 9.1 | 2.4 | 0 | 3.1 | 6.9 | 13.7 | 7.7 | 3.7 | 1.6 | 0.2 | 4.1 | 1.1 | 1.8 | 4.6 | 0.9 | -1.5 | 4.9 | -3.1 | -5.5 | -10.5 | -6 |
| Apparent max temperature | 4.6 | 2.7 | 11 | -0.7 | -5.6 | -3.6 | -4.2 | -2.3 | 3.5 | 2.7 | 6.1 | -0.9 | -5.3 | -2.4 | 1.6 | 9.3 | 3.1 | -1.7 | -1.2 | -5.1 | 0.2 | -2.6 | -4 | 1.3 | -3.5 | -7.1 | -1.4 | -8.9 | -11.6 | -17 | -11.4 |
| Mean temperature | 2.8 | 1.9 | 6.7 | 0.7 | -0.8 | -2.1 | -4.7 | -3.6 | -0.5 | 2 | 3 | 0.1 | -3.4 | -4 | 1.8 | 8.1 | 3.4 | 0.3 | 1 | -1.1 | -1.9 | -0.4 | -3.2 | -0.7 | -0.2 | -6.4 | -2.9 | -5 | -8.7 | -12.9 | -12.1 |
| Apparent mean temperature | -4.8 | -4.8 | -0.3 | -6.3 | -7.2 | -9.6 | -13.6 | -10.8 | -9 | -5.4 | -3.9 | -8.5 | -12.1 | -11.7 | -7.1 | 0.4 | -4.8 | -5.8 | -6.8 | -8.9 | -9.5 | -5.1 | -11.7 | -8.7 | -6.3 | -17.7 | -15.2 | -12.3 | -18.2 | -21.3 | -20.5 |
| Minimum temperature | -1.3 | -0.5 | 3.9 | -1.2 | -1.8 | -4.6 | -8.3 | -6.7 | -4.7 | -1.6 | -0.6 | -1.7 | -5.6 | -7.7 | -0.8 | 5.8 | 0.5 | -1.8 | 0.1 | -2.4 | -5.7 | -1.4 | -6.5 | -4.9 | -1.3 | -10.9 | -9.7 | -6.9 | -11.8 | -14.9 | -15.5 |
| Apparent min temperature | -0.3 | -1.9 | 2.8 | -4.8 | -6.5 | -6.8 | -9.3 | -7.5 | -5.1 | -1.7 | -0.1 | -5.6 | -9.4 | -8.7 | -4 | 3.2 | -2 | -4 | -3.9 | -7.2 | -5.8 | -4 | -8.4 | -4.7 | -4.4 | -13.1 | -9.2 | -10.3 | -15.3 | -19.3 | -17.4 |
| 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) | 9.3 | 9.3 | 9.3 | 9.3 | 9.3 | 9.3 | 9.3 | 9.4 | 9.4 | 9.4 | 9.4 | 9.5 | 9.5 | 9.5 | 9.5 | 9.6 | 9.6 | 9.6 | 9.6 | 9.7 | 9.7 | 9.7 | 9.8 | 9.8 | 9.8 | 9.9 | 9.9 | 9.9 | 10 | 10 | 10 |
| Sunshine duration (h) | 4.2 | 0.2 | 3.4 | 0 | 0 | 3.3 | 8.3 | 8.3 | 8.1 | 7.8 | 7.2 | 3.9 | 8 | 8 | 6 | 5.3 | 0.9 | 0.4 | 0 | 2.6 | 4 | 1.3 | 5.7 | 7.3 | 0 | 6.7 | 5.4 | 1.1 | 7.2 | 8.5 | 8.9 |
| Precipitation (mm) | 0.6 | 0 | 25.8 | 0.2 | 0.2 | 0 | 0 | 0.1 | 0 | 0 | 0 | 0 | 0.1 | 0 | 0 | 6.7 | 0.1 | 3.8 | 6.8 | 0 | 0.1 | 5.1 | 0 | 0 | 4.1 | 0.9 | 1 | 1.4 | 0.7 | 0.4 | 0 |
| Precipitation hours | 1 | 0 | 17 | 2 | 2 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 13 | 1 | 3 | 12 | 0 | 1 | 19 | 0 | 0 | 13 | 6 | 6 | 6 | 5 | 4 | 0 |
| Wind speed (m/s) | 12.8 | 16.7 | 26.5 | 25.1 | 28.1 | 19.5 | 14.6 | 10.6 | 16.6 | 15.5 | 11.9 | 29.6 | 24.5 | 18.7 | 25.9 | 29.2 | 27.3 | 24.1 | 35.5 | 28.2 | 11.7 | 13.4 | 22.1 | 15.8 | 21.2 | 25.4 | 36.1 | 21.9 | 24.9 | 20.9 | 12.9 |
In January 2023, the highest daytime temperature in Washington was 14.1°C.
While the minimum temperature at night dropped to -15.5°C.
The average nighttime and daytime temperatures during January in Washington are -4.2°C and 3°C respectively.
The precipitation sum in January is about 58 mm.