Average temperature in December is -5 °C
Average daytime temperature is -0.9 °C
Average night temperature is -8.3 °C
Absolute maximum temperature: 9 °C
Absolute minimum temperature: -19.3 °C
Number of sunny days: 21
Number of rainy days: 2
Number of snow days: 8
Precipitation sum: 27 mm
* Weather data for Challis 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 | 1.4 | 0.9 | -0.1 | 6 | 9 | 8 | 5.4 | -1.9 | -2.6 | 0.4 | 0.4 | -1 | -4.3 | -6.2 | -3.5 | -2.3 | -3.5 | -1.2 | 1.9 | 1.5 | -0.2 | -0.3 | -1.5 | -4.7 | -11.9 | -8.4 | -6.5 | -1.2 | -1.2 | 1.2 | -0.8 |
| Apparent max temperature | -3.9 | -2.9 | -4 | 3.3 | 7 | 5.2 | 2.3 | -6.1 | -6.8 | -2.3 | -2.3 | -3.6 | -7.8 | -9.6 | -6.7 | -5.4 | -7 | -4.2 | -0.9 | -1.4 | -3.4 | -3.2 | -4.4 | -8.5 | -15.9 | -11.9 | -9.7 | -4.2 | -3.9 | -1.6 | -3.5 |
| Mean temperature | -2.6 | -2.7 | -2.7 | 1 | 3.7 | 4.1 | 1.2 | -4.6 | -10.4 | -4.3 | -2.9 | -4.6 | -8.1 | -8.8 | -7.6 | -5.5 | -5.4 | -6 | -1.7 | -0.7 | -1.9 | -3.1 | -3.8 | -12.6 | -16.3 | -14.1 | -9.8 | -7.1 | -5.3 | -5.6 | -5.6 |
| Apparent mean temperature | -9.7 | -9.6 | -11.5 | -5.7 | -5.5 | -0.9 | -7.3 | -11 | -21.2 | -14.1 | -10 | -9.6 | -14.8 | -16.3 | -14.7 | -11.4 | -11.9 | -13.6 | -7 | -7.7 | -9.7 | -8 | -12.8 | -19.8 | -23.3 | -21.6 | -16.1 | -14 | -12.8 | -12.7 | -12.1 |
| Minimum temperature | -5.9 | -5.2 | -7.1 | -2.3 | -1.6 | 2 | -2.8 | -6.3 | -16.5 | -9.9 | -6.3 | -6.2 | -10.9 | -12.2 | -11 | -7.8 | -8.2 | -9.8 | -4 | -4.4 | -6 | -4.9 | -8.4 | -15.7 | -19.3 | -17.6 | -12.3 | -10.4 | -9.2 | -8.9 | -8.5 |
| Apparent min temperature | -6.4 | -6.7 | -6.7 | -2.2 | 1 | 1.2 | -2.3 | -8.6 | -14.7 | -8 | -5.9 | -7.7 | -11.7 | -12.6 | -11.1 | -8.9 | -9.1 | -9.5 | -4.8 | -3.6 | -5 | -6.2 | -7.4 | -16.6 | -20.3 | -17.9 | -13.3 | -10.6 | -8.6 | -9.1 | -9 |
| 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) | 9.1 | 9.1 | 9 | 9 | 9 | 9 | 9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.8 | 8.8 | 8.8 | 8.8 | 8.8 | 8.8 | 8.8 | 8.8 | 8.8 | 8.8 | 8.8 | 8.8 | 8.8 | 8.9 | 8.9 | 8.9 |
| Sunshine duration (h) | 2.6 | 0 | 0 | 6.4 | 7.5 | 7.7 | 7.4 | 7.2 | 7.8 | 2 | 0.6 | 6.5 | 7.6 | 7.5 | 7.1 | 7 | 7.3 | 1.2 | 5.9 | 7.2 | 7.5 | 7.5 | 7.4 | 7.5 | 7.7 | 2.4 | 4.1 | 7 | 7.1 | 7.6 | 7.6 |
| Precipitation (mm) | 0.5 | 4.3 | 2.7 | 0.5 | 0 | 0 | 5.3 | 2.7 | 0 | 4.2 | 0.6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.6 | 0 | 0 | 1.5 | 0 | 0 | 0 | 0 | 0 |
| Precipitation hours | 4 | 11 | 8 | 3 | 0 | 0 | 8 | 10 | 0 | 11 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 0 | 0 | 6 | 0 | 0 | 0 | 0 | 0 |
| Wind speed (m/s) | 13.5 | 8.2 | 11.3 | 9.2 | 7.9 | 6.1 | 11.2 | 9.5 | 7.6 | 6.4 | 7 | 3.6 | 5.4 | 4.8 | 4.1 | 3.6 | 4 | 3 | 3.8 | 3.7 | 4.8 | 4.8 | 10.1 | 4.9 | 3.2 | 2.9 | 3.9 | 4.1 | 3.6 | 4.2 | 4.4 |
In December 2023, the highest daytime temperature in Challis was 9°C.
While the minimum temperature at night dropped to -19.3°C.
The average nighttime and daytime temperatures during December in Challis are -8.3°C and -0.9°C respectively.
The precipitation sum in December is about 27 mm.