Average temperature in December is 8.1 °C
Average daytime temperature is 13.5 °C
Average night temperature is 3.9 °C
Absolute maximum temperature: 20.3 °C
Absolute minimum temperature: -3.3 °C
Number of sunny days: 19
Number of rainy days: 12
Number of snow days:
Precipitation sum: 154 mm
* Weather data for Cary 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 | 16 | 18.6 | 20.3 | 17.1 | 13.5 | 9.3 | 10.4 | 15 | 19.1 | 18.5 | 16.8 | 9.4 | 12.9 | 9 | 12.7 | 13.3 | 12 | 12.3 | 7.7 | 7 | 12 | 11.8 | 13.4 | 16.7 | 16.5 | 16.1 | 16.7 | 14.5 | 12.5 | 8.6 | 10.1 |
| Apparent max temperature | 15.1 | 20.3 | 21 | 17.4 | 11.3 | 4.5 | 6.1 | 12.2 | 18.6 | 18.8 | 16.9 | 6.4 | 9 | 5.4 | 10.6 | 10.1 | 9.2 | 8.3 | 3.1 | 3.5 | 9.7 | 9.3 | 10.9 | 15.6 | 14 | 15.7 | 18.2 | 14.5 | 9.4 | 3.5 | 6.9 |
| Mean temperature | 8.2 | 16.9 | 17.7 | 12.7 | 8.7 | 6.3 | 4.5 | 8.1 | 12 | 16.1 | 7 | 2.9 | 5.2 | 4.6 | 4.2 | 5.4 | 8.9 | 10.7 | 3.1 | 1.1 | 2.8 | 4.7 | 5.7 | 8.3 | 10.3 | 12.9 | 13.7 | 11.8 | 7.6 | 4.5 | 4.5 |
| Apparent mean temperature | -1.5 | 15.6 | 15.7 | 5.4 | 0.5 | -0.8 | -4 | 0.4 | 4.8 | 13.3 | -3.2 | -6.6 | -2.7 | -4.5 | -4.6 | -4 | 3 | 4 | -6.4 | -7.3 | -6.6 | -3.2 | -3.9 | -0.2 | 2.5 | 8.7 | 9.9 | 7.3 | 0.5 | -3.9 | -3 |
| Minimum temperature | 2 | 15.6 | 15.4 | 7.8 | 3.6 | 3.2 | -0.4 | 3.9 | 7.2 | 14.2 | 1.5 | -2.8 | 0.9 | -0.1 | -1 | -0.7 | 7 | 7.9 | -0.9 | -3.3 | -2.8 | 0.2 | -0.4 | 3 | 5.7 | 10.6 | 11.7 | 9.5 | 3.2 | 0.3 | 0.4 |
| Apparent min temperature | 5.6 | 17.8 | 18.1 | 10.7 | 5.9 | 2.4 | 0.2 | 4.6 | 9.9 | 15.8 | 3.3 | -0.6 | 1.8 | 0.5 | 1.2 | 2.2 | 5.4 | 6.6 | -2.2 | -2.8 | -0.3 | 1.7 | 2.9 | 6.1 | 7.9 | 11.1 | 13.1 | 10.6 | 4.5 | 0 | 1.2 |
| 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) | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.8 | 9.8 | 9.8 |
| Sunshine duration (h) | 3.2 | 0 | 0 | 8.8 | 8.7 | 8.8 | 8.8 | 8.4 | 8.7 | 0 | 8.6 | 8.8 | 8.6 | 8.7 | 8.7 | 8.3 | 0 | 8.7 | 8.7 | 8.7 | 8.7 | 7.3 | 8.6 | 8.7 | 7 | 2.6 | 0 | 5.6 | 6.9 | 6.5 | 8.7 |
| Precipitation (mm) | 1.2 | 8.6 | 1.6 | 0.5 | 0 | 0.9 | 0 | 0 | 0 | 17 | 23 | 0 | 0 | 0 | 0 | 0 | 48 | 19.3 | 0.8 | 0 | 0 | 0 | 0 | 0 | 0 | 2.9 | 30 | 0 | 0 | 0 | 0 |
| Precipitation hours | 2 | 8 | 6 | 1 | 0 | 4 | 0 | 0 | 0 | 11 | 11 | 0 | 0 | 0 | 0 | 0 | 13 | 6 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 21 | 0 | 0 | 0 | 0 |
| Wind speed (m/s) | 16.2 | 14.1 | 19.2 | 12.8 | 14.1 | 21.5 | 16.5 | 14.3 | 13.2 | 19.7 | 33.3 | 12.6 | 12.7 | 13.1 | 8.9 | 11.7 | 29.4 | 27.7 | 24.6 | 12.3 | 8.6 | 9 | 10.7 | 10.1 | 14 | 16.3 | 17.1 | 11.5 | 19.4 | 21 | 12 |
In December 2023, the highest daytime temperature in Cary was 20.3°C.
While the minimum temperature at night dropped to -3.3°C.
The average nighttime and daytime temperatures during December in Cary are 3.9°C and 13.5°C respectively.
The precipitation sum in December is about 154 mm.