Average temperature in December is 1.8 °C
Average daytime temperature is 5.2 °C
Average night temperature is -1 °C
Absolute maximum temperature: 12.7 °C
Absolute minimum temperature: -8 °C
Number of sunny days: 15
Number of rainy days: 13
Number of snow days: 3
Precipitation sum: 49 mm
* Weather data for Watertown United States is based on climate observations for 2023 year
| Dicembre (°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 | 3.2 | 4.3 | 1.7 | 2.8 | 3.2 | 2.4 | 8.7 | 12.5 | 7.6 | 3.1 | 0.1 | 0.3 | 4.5 | 8.6 | 9.4 | 6.3 | 5.2 | 3.8 | 0.1 | 4.2 | 5 | 8.4 | 7 | 12.7 | 10.6 | 10.3 | 5.4 | 2.3 | 3.8 | 4.7 | -0.1 |
| Apparent max temperature | -1.5 | 0.3 | -1.8 | -1 | -1.2 | -2.4 | 5.5 | 9.2 | 5.6 | -2.5 | -4.4 | -5.6 | -1.4 | 4.4 | 5.8 | 2.6 | 2.9 | -0.8 | -5.9 | 0.5 | 1.4 | 6.1 | 4.9 | 9.5 | 7.3 | 7.3 | 1.3 | -2.3 | -0.4 | 0.7 | -4.3 |
| Mean temperature | 0 | 0.9 | 1.1 | -0.5 | 0 | -0.9 | 3 | 7.6 | 5.9 | -0.1 | -4.3 | -1.4 | -2.6 | 1.5 | 3.7 | 5.2 | 4.9 | -1.7 | -5.4 | -0.6 | 1.1 | 4.6 | 4.5 | 7.8 | 9.3 | 6.4 | 0.9 | 0.6 | 1.6 | -1.3 | -1 |
| Apparent mean temperature | -7.3 | -5.2 | -3 | -7.7 | -6.7 | -8 | -4.3 | 0.5 | -2.2 | -7.5 | -11.1 | -8.7 | -11.1 | -6.4 | -3 | 0.2 | -0.2 | -11.9 | -13 | -7.8 | -5.2 | -0.6 | -0.6 | 3.4 | 4.5 | -1.7 | -7.4 | -6.1 | -4.7 | -8.6 | -6.4 |
| Minimum temperature | -3 | -1.7 | 0.4 | -4 | -2.6 | -4.1 | -0.5 | 4.1 | 3.5 | -3.6 | -7.3 | -3.1 | -6.9 | -1.5 | 0.6 | 4.3 | 3.9 | -5.3 | -8 | -3.6 | -1.6 | 2.9 | 1.9 | 5.7 | 8.2 | 2.8 | -3.6 | -1.1 | -0.5 | -4.8 | -2.2 |
| Apparent min temperature | -4.7 | -3 | -2.3 | -3.9 | -3.7 | -5.1 | -1.1 | 3.8 | 2.2 | -5.4 | -8.4 | -6.9 | -7.6 | -3.1 | 0 | 1.3 | 1.7 | -8.3 | -10.9 | -5 | -2.6 | 2 | 2.3 | 5.2 | 6.1 | 2.5 | -2.7 | -4 | -2.7 | -5.2 | -5.6 |
| Dicembre | 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) | 9.2 | 9.2 | 9.2 | 9.2 | 9.1 | 9.1 | 9.1 | 9.1 | 9.1 | 9.1 | 9.1 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| Sunshine duration (h) | 0 | 1.7 | 0 | 4 | 3.6 | 6.3 | 7.9 | 7.9 | 4 | 4.5 | 6.8 | 7.9 | 7.8 | 7.8 | 5 | 0 | 0 | 7.3 | 7.8 | 7.8 | 0.2 | 0 | 0 | 3 | 0.2 | 2.8 | 7.9 | 0 | 6.8 | 7.9 | 0 |
| Precipitation (mm) | 1 | 0.8 | 7.9 | 0 | 1 | 0 | 0 | 0 | 10.8 | 0 | 0 | 0 | 0 | 0 | 0 | 4.1 | 1.1 | 0.2 | 0 | 0 | 0 | 1 | 1.2 | 0.1 | 1 | 5.9 | 0 | 10.6 | 0.6 | 0 | 1.3 |
| Precipitation hours | 4 | 6 | 14 | 0 | 4 | 0 | 0 | 0 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 8 | 2 | 0 | 0 | 0 | 4 | 5 | 1 | 4 | 10 | 0 | 15 | 3 | 0 | 6 |
| Wind speed (m/s) | 18.9 | 13.5 | 13.3 | 10.3 | 13.3 | 20.7 | 24.5 | 21.8 | 24.6 | 21.4 | 11.5 | 21.6 | 15.6 | 15.3 | 13.6 | 17.3 | 16.2 | 31.3 | 18.7 | 17.1 | 11.3 | 11.6 | 8.2 | 19.9 | 23.5 | 25.9 | 13 | 19.4 | 17.3 | 9.7 | 24.3 |
In December 2023, the highest daytime temperature in Watertown was 12.7°C.
While the minimum temperature at night dropped to -8°C.
The average nighttime and daytime temperatures during December in Watertown are -1°C and 5.2°C respectively.
The precipitation sum in December is about 49 mm.