Average temperature in December is 11.5 °C
Average daytime temperature is 17.6 °C
Average night temperature is 6.8 °C
Absolute maximum temperature: 25.3 °C
Absolute minimum temperature: 0.4 °C
Number of sunny days: 23
Number of rainy days: 8
Number of snow days:
Precipitation sum: 84 mm
* Weather data for Hillsboro 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 | 18.4 | 17.9 | 21.1 | 16.7 | 19.4 | 18.1 | 20.7 | 25.3 | 22.1 | 14.1 | 17.2 | 17.7 | 14.5 | 18 | 15.5 | 15.5 | 20.4 | 16.6 | 16.5 | 20.1 | 17.3 | 21.6 | 20.4 | 21 | 16.5 | 12.9 | 11.1 | 11.3 | 12.9 | 16.7 | 18.6 |
| Apparent max temperature | 18.9 | 16.3 | 15.8 | 13.3 | 17.5 | 14.1 | 17.2 | 23.3 | 20.3 | 8.7 | 13 | 14.4 | 10.6 | 14.8 | 15.6 | 14.8 | 17 | 12.2 | 11.6 | 17.2 | 15.6 | 21.1 | 19.6 | 20.4 | 15.1 | 7.9 | 6.4 | 6.1 | 7.8 | 13.4 | 16.6 |
| Mean temperature | 13.2 | 10.5 | 13.4 | 12.7 | 11.3 | 12.1 | 13.4 | 19 | 16.8 | 8.8 | 8.3 | 10.8 | 11.9 | 11.5 | 13.6 | 10.3 | 9.8 | 11.6 | 9.2 | 13.2 | 14.9 | 15.9 | 16.3 | 17.3 | 8.5 | 6 | 7 | 5.9 | 5.8 | 7.9 | 10.8 |
| Apparent mean temperature | 3.1 | 3.9 | 2.5 | 2.2 | 2.8 | 3.2 | 4.9 | 13.4 | 7.9 | -2 | -1.4 | 1.5 | 6 | 2.8 | 8 | 2 | -0.7 | 2.8 | -0.1 | 6 | 12 | 12.6 | 13.5 | 15.3 | -2 | -2.8 | -0.8 | -2.1 | -3.9 | -3.2 | 0.5 |
| Minimum temperature | 7.2 | 5.9 | 6.5 | 5.8 | 6 | 6.3 | 8.8 | 15.5 | 11.2 | 3.4 | 3 | 4.6 | 10.1 | 7.2 | 11.4 | 5.3 | 2.7 | 7.3 | 4.1 | 8.7 | 13.4 | 13.2 | 13.8 | 15.7 | 3.6 | 0.6 | 3.1 | 1.2 | 0.4 | 0.7 | 4.5 |
| Apparent min temperature | 10.7 | 8.4 | 9.6 | 8.8 | 8.6 | 8.7 | 9.4 | 16.8 | 14.1 | 3.2 | 4 | 7.1 | 7.8 | 7.5 | 11.6 | 7.2 | 6.8 | 7.9 | 5.3 | 10.2 | 13.7 | 15.3 | 15.8 | 16.8 | 3.2 | 2 | 3.1 | 2.3 | 1.3 | 4.4 | 7.8 |
| 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) | 10.2 | 10.2 | 10.2 | 10.2 | 10.2 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 |
| Sunshine duration (h) | 9 | 6.2 | 9.3 | 9.3 | 9.2 | 9.1 | 6.6 | 8 | 9.1 | 9.2 | 9.1 | 9 | 0 | 8.2 | 2.1 | 9 | 9 | 9.1 | 8 | 9 | 0 | 8.3 | 0.7 | 4 | 9 | 9 | 9 | 9 | 9 | 9 | 8.6 |
| Precipitation (mm) | 0.3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 0.9 | 15.1 | 0 | 0 | 0 | 0 | 0 | 10.3 | 12.9 | 0.3 | 44.2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation hours | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 7 | 0 | 0 | 0 | 0 | 0 | 6 | 14 | 3 | 19 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Wind speed (m/s) | 17.6 | 11.2 | 25.1 | 22 | 10.6 | 14 | 33.1 | 29.6 | 26 | 28.1 | 12.7 | 16.5 | 19.6 | 16.9 | 22.4 | 18.1 | 14 | 19.8 | 18.4 | 23.4 | 18.2 | 14.3 | 22.5 | 25.2 | 29 | 21.2 | 19.9 | 22.3 | 20.9 | 13.2 | 14.3 |
In December 2023, the highest daytime temperature in Hillsboro was 25.3°C.
While the minimum temperature at night dropped to 0.4°C.
The average nighttime and daytime temperatures during December in Hillsboro are 6.8°C and 17.6°C respectively.
The precipitation sum in December is about 84 mm.