Average temperature in December is 8.3 °C
Average daytime temperature is 13.5 °C
Average night temperature is 4.2 °C
Absolute maximum temperature: 20.5 °C
Absolute minimum temperature: -3.6 °C
Number of sunny days: 18
Number of rainy days: 13
Number of snow days:
Precipitation sum: 140 mm
* Weather data for Royston United States is based on climate observations for 2023 year
| December (°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 | 13.7 | 19.4 | 20.5 | 18.1 | 14.2 | 11.8 | 12.6 | 14 | 16.4 | 15.8 | 11.7 | 10.9 | 13.8 | 11.4 | 12.1 | 12.7 | 12.3 | 13.1 | 7.8 | 8.9 | 12.7 | 14.1 | 16.5 | 17 | 13.9 | 16.1 | 17 | 12.2 | 7.8 | 8.4 | 11.9 |
| Apparent max temperature | 14.2 | 20 | 18.3 | 14.4 | 10.6 | 7.6 | 8.7 | 11.3 | 17.7 | 16.3 | 8.1 | 8.6 | 10.7 | 7.4 | 8.8 | 9 | 10.6 | 8.4 | 3.3 | 5.8 | 9.7 | 11.5 | 15.2 | 15.2 | 12.7 | 16.8 | 14.7 | 8.8 | 3.1 | 4 | 7.9 |
| Mean temperature | 8.2 | 13.6 | 17.4 | 12.2 | 8.8 | 8.2 | 5 | 7.6 | 11.8 | 13.7 | 6.2 | 4.6 | 5.8 | 7.3 | 5.9 | 7.4 | 8.5 | 9.2 | 2.2 | 2 | 3.7 | 7 | 8.6 | 10.6 | 12.3 | 14.7 | 13.9 | 8.9 | 4.5 | 3.9 | 4.6 |
| Apparent mean temperature | 1.7 | 9.9 | 12.6 | 4 | 0 | 1.4 | -3.8 | -0.7 | 5.9 | 7 | -4.3 | -3.1 | -2.8 | -0.4 | -2.4 | 0.1 | 2.7 | 0.7 | -7.9 | -6.4 | -6.2 | -1.1 | 0.7 | 2.7 | 8.7 | 12.4 | 9.4 | 1.8 | -3.6 | -4 | -4.1 |
| Minimum temperature | 4.7 | 10.5 | 15.1 | 6.8 | 2.9 | 5.3 | -0.7 | 2.9 | 8.2 | 9.7 | 0.2 | 0.3 | 0.4 | 4 | 1.2 | 4 | 6.2 | 5 | -3.6 | -2.9 | -2.6 | 1.7 | 3.3 | 5.4 | 10.8 | 13.3 | 12.2 | 5 | 1.1 | 0.1 | 0.1 |
| Apparent min temperature | 6.4 | 13.7 | 17.1 | 9.4 | 5.6 | 4.3 | 1.6 | 4.5 | 11 | 13.5 | 2.2 | 1.3 | 2.9 | 3.5 | 2.4 | 3.8 | 5.5 | 5 | -2.2 | -1.4 | 0.7 | 4.1 | 6.4 | 8.6 | 10.5 | 14.3 | 13 | 5.5 | -0.1 | -0.4 | 0.6 |
| December | 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 | 10 | 10 | 10 | 10 | 10 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 |
| Sunshine duration (h) | 0.2 | 0.9 | 3.1 | 8.9 | 9 | 8.9 | 8.9 | 8.7 | 5.6 | 0 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 2.7 | 0.4 | 8.9 | 8.9 | 8.9 | 8.9 | 8.3 | 8.9 | 8.2 | 0 | 0 | 7.6 | 8.9 | 7.7 | 8.9 | 8.9 |
| Precipitation (mm) | 3.6 | 7.8 | 13 | 0 | 0 | 0 | 0 | 0 | 18.6 | 34.2 | 1.5 | 0 | 0 | 0 | 0 | 0.7 | 9.9 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 10.2 | 39.3 | 0.7 | 0 | 0.1 | 0 | 0 |
| Precipitation hours | 6 | 11 | 8 | 0 | 0 | 0 | 0 | 0 | 11 | 19 | 2 | 0 | 0 | 0 | 0 | 2 | 18 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 14 | 18 | 3 | 0 | 1 | 0 | 0 |
| Wind speed (m/s) | 10.3 | 12.1 | 17 | 22.7 | 15.2 | 14.4 | 12.2 | 10.9 | 8.5 | 18.5 | 20.7 | 11.7 | 11.1 | 14.1 | 11.8 | 12.6 | 19.2 | 21.9 | 24 | 8.4 | 7.5 | 7.6 | 8.7 | 11.5 | 21.3 | 16.5 | 12.7 | 13.4 | 23.3 | 16.9 | 14.5 |
In December 2023, the highest daytime temperature in Royston was 20.5°C.
While the minimum temperature at night dropped to -3.6°C.
The average nighttime and daytime temperatures during December in Royston are 4.2°C and 13.5°C respectively.
The precipitation sum in December is about 140 mm.