Average temperature in January is -5.1 °C
Average daytime temperature is -2.3 °C
Average night temperature is -8.2 °C
Absolute maximum temperature: 4.7 °C
Absolute minimum temperature: -26.9 °C
Number of sunny days: 13
Number of rainy days: 2
Number of snow days: 16
Precipitation sum: 60 mm
* Weather data for Casper United States is based on climate observations for 2023 year
| January (°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 | 0.8 | -2.3 | -3.1 | -5.2 | 1 | 1.4 | -0.9 | 1.6 | 2.5 | 3.9 | 2.8 | -0.5 | 4.7 | 4.3 | 2.7 | 0 | -3.5 | -2.5 | -3.3 | -6.9 | -3.4 | -3.9 | -3.1 | -4 | -4.3 | -2.6 | -0.4 | -0.7 | -15.8 | -18.8 | -10.4 |
| Apparent max temperature | -3.1 | -7.3 | -6.8 | -11.4 | -5.3 | -3.1 | -5.5 | -6 | -5 | -1.5 | -2.2 | -4.5 | -1.6 | -2.4 | -2.3 | -3.1 | -7.1 | -5.7 | -9.2 | -10.8 | -10 | -8.8 | -7.5 | -9.8 | -10.7 | -11.4 | -8.1 | -6.9 | -21.9 | -24.8 | -19.6 |
| Mean temperature | -1.4 | -3.1 | -5.7 | -6.4 | -5 | 0.1 | -3.1 | -1.5 | -0.5 | 2.9 | -0.8 | -2.6 | 1.1 | 3.5 | -0.1 | -1.3 | -6.8 | -3.1 | -7.9 | -8.4 | -8.4 | -5.5 | -4.6 | -6.8 | -6.4 | -5.7 | -2.1 | -5.7 | -19.6 | -24 | -18.6 |
| Apparent mean temperature | -7.3 | -9.8 | -12.2 | -15.4 | -15.3 | -7.5 | -11.2 | -11.8 | -12.5 | -6.3 | -9.1 | -12.1 | -9.1 | -7 | -8.5 | -8.2 | -13.7 | -9.6 | -17.6 | -14 | -18.7 | -15.2 | -10.1 | -16 | -15.1 | -15 | -11.4 | -21 | -27.8 | -32 | -31.1 |
| Minimum temperature | -2.6 | -3.7 | -7.8 | -8.7 | -10.1 | -1.5 | -6.4 | -6.5 | -7.3 | 2.3 | -5 | -6.7 | -1.4 | 2.7 | -4.1 | -3.9 | -9.8 | -4.9 | -12.2 | -9.8 | -13.7 | -9.9 | -5.7 | -10.1 | -9.5 | -7.8 | -4 | -13.7 | -21.5 | -26.9 | -25 |
| Apparent min temperature | -5.6 | -8.7 | -9.9 | -13.2 | -11.4 | -5.6 | -8.1 | -8.3 | -7.5 | -4.1 | -4.7 | -8.1 | -5.7 | -4.1 | -4.7 | -6.5 | -10.8 | -7.2 | -13.9 | -12.6 | -13.5 | -11.2 | -8.9 | -12.3 | -12.3 | -13.3 | -10 | -11.2 | -25.4 | -29.2 | -26.6 |
| January | 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 | 9.1 | 9.1 | 9.1 | 9.2 | 9.2 | 9.2 | 9.2 | 9.3 | 9.3 | 9.3 | 9.3 | 9.3 | 9.4 | 9.4 | 9.4 | 9.5 | 9.5 | 9.5 | 9.6 | 9.6 | 9.6 | 9.7 | 9.7 | 9.7 | 9.8 | 9.8 | 9.8 | 9.9 | 9.9 |
| Sunshine duration (h) | 0 | 0 | 7.4 | 7.9 | 5.5 | 1.1 | 7.9 | 8 | 8.1 | 1 | 0.2 | 7.9 | 8.1 | 7.9 | 1 | 7.9 | 2.2 | 3.1 | 8.4 | 6.3 | 5.8 | 7 | 5.8 | 8.6 | 2.9 | 6.9 | 2.8 | 0.2 | 3.4 | 8 | 8.8 |
| Precipitation (mm) | 8.4 | 11.1 | 0.5 | 0 | 0 | 0 | 0 | 0 | 0 | 1.5 | 7.5 | 1 | 0 | 0 | 0.8 | 0 | 1.2 | 5.5 | 0 | 0 | 0.4 | 0.1 | 3.8 | 0.6 | 1.5 | 0.3 | 0.9 | 12.4 | 2.7 | 0 | 0 |
| Precipitation hours | 14 | 24 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 15 | 3 | 0 | 0 | 3 | 0 | 6 | 14 | 0 | 0 | 3 | 1 | 14 | 4 | 8 | 2 | 5 | 23 | 22 | 0 | 0 |
| Wind speed (m/s) | 22.7 | 24.2 | 21.9 | 26.8 | 31.4 | 32.4 | 24 | 39.2 | 40.6 | 44.9 | 20.9 | 27.7 | 32.4 | 48.1 | 25 | 22.7 | 11.3 | 18.1 | 26.3 | 8.7 | 23.8 | 22.6 | 13.6 | 21.3 | 23.2 | 44.8 | 40.9 | 29.7 | 18.2 | 14.4 | 43.3 |
In January 2023, the highest daytime temperature in Casper was 4.7°C.
While the minimum temperature at night dropped to -26.9°C.
The average nighttime and daytime temperatures during January in Casper are -8.2°C and -2.3°C respectively.
The precipitation sum in January is about 60 mm.