Average temperature in January is -10.2 °C
Average daytime temperature is -6.6 °C
Average night temperature is -13 °C
Absolute maximum temperature: 1.5 °C
Absolute minimum temperature: -26.5 °C
Number of sunny days: 23
Number of rainy days: 1
Number of snow days: 7
Precipitation sum: 9 mm
* Weather data for Rolla United States is based on climate observations for 2023 year
| Gennaio (°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 | -6.6 | -5.3 | -6 | -9.2 | -6.7 | -10.4 | -8.4 | 1.5 | -1.8 | -0.2 | -6.2 | -6.7 | -5 | -3 | 0.5 | -3.1 | -9.8 | -9.7 | -5.7 | -2.4 | -3.4 | -5.5 | -0.6 | -4.6 | -8.1 | -1.9 | 0.7 | -19.1 | -21 | -20.2 | -15.7 |
| Apparent max temperature | -10.8 | -10.3 | -9.8 | -13 | -10.8 | -14.5 | -15.1 | -2.6 | -6.4 | -3.8 | -10.4 | -10.4 | -11.7 | -7.6 | -2.2 | -6.8 | -15.4 | -13.8 | -9.4 | -7.4 | -7.2 | -11.5 | -6.4 | -8.6 | -12.2 | -7.2 | -4.8 | -25.4 | -27.2 | -27.2 | -20.2 |
| Mean temperature | -8.1 | -9.6 | -11.3 | -12.1 | -10.4 | -11.6 | -13.1 | -5.2 | -5.6 | -3.6 | -8 | -9.1 | -9.3 | -5.1 | -4.5 | -6.2 | -11.2 | -11.3 | -9.3 | -5.3 | -6.7 | -7.2 | -3 | -8.4 | -12.8 | -7.9 | -9.4 | -21.9 | -23 | -24.5 | -21.1 |
| Apparent mean temperature | -14.3 | -17.3 | -19.8 | -20.5 | -19 | -18.3 | -25.4 | -15.1 | -14.1 | -11.9 | -15.7 | -16.8 | -18.5 | -12.7 | -11.8 | -15.2 | -19.5 | -16.7 | -15.1 | -11.1 | -13.8 | -13.5 | -12.4 | -17.4 | -21 | -18 | -23.3 | -30.7 | -30.3 | -33.2 | -30.3 |
| Minimum temperature | -9.7 | -11.9 | -15.2 | -15.4 | -14.3 | -13.1 | -17.8 | -8.5 | -8.4 | -6.2 | -9.8 | -10.8 | -11 | -8.1 | -7.5 | -8.6 | -12.9 | -12.3 | -11.1 | -7.5 | -9 | -8.9 | -7.6 | -10.8 | -16 | -12.9 | -17 | -24.8 | -24.5 | -26.5 | -24 |
| Apparent min temperature | -12.9 | -14.9 | -15.8 | -16.4 | -15 | -16.2 | -20.4 | -10.3 | -10.7 | -8.3 | -13.5 | -14.6 | -16.4 | -9.9 | -8.5 | -11.4 | -17.4 | -15.6 | -13.2 | -9.8 | -11.8 | -12.7 | -9.2 | -13.5 | -17.9 | -13.5 | -17.1 | -27.8 | -29.3 | -31.4 | -27.1 |
| Gennaio | 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) | 8.3 | 8.3 | 8.4 | 8.4 | 8.4 | 8.4 | 8.5 | 8.5 | 8.5 | 8.5 | 8.6 | 8.6 | 8.6 | 8.7 | 8.7 | 8.7 | 8.8 | 8.8 | 8.8 | 8.9 | 8.9 | 9 | 9 | 9.1 | 9.1 | 9.1 | 9.2 | 9.2 | 9.3 | 9.3 | 9.4 |
| Sunshine duration (h) | 3.4 | 7 | 6.9 | 5.5 | 6.8 | 0.2 | 6.5 | 6.4 | 4.3 | 2.4 | 0.4 | 4.4 | 3 | 0.5 | 4.9 | 0 | 0 | 0 | 0 | 0.4 | 7.7 | 5.6 | 6.8 | 0 | 6.6 | 0.4 | 5.9 | 7.9 | 7.9 | 8.1 | 8 |
| Precipitation (mm) | 0.3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.5 | 0 | 0 | 0 | 0.3 | 0.1 | 0 | 0 | 0 | 0 | 0 | 0 | 0.6 | 1.6 | 0 | 3.9 | 2 | 0 | 0 | 0 | 0 |
| Precipitation hours | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 11 | 0 | 6 | 8 | 0 | 0 | 0 | 0 |
| Wind speed (m/s) | 16.4 | 27.2 | 11.5 | 10 | 11.5 | 11.6 | 36.9 | 24.1 | 19.7 | 19.6 | 19.8 | 26.4 | 35.8 | 25.5 | 14.8 | 23.1 | 23.1 | 12.6 | 6.9 | 17.3 | 21 | 26.4 | 33.2 | 25.7 | 21.1 | 36.4 | 48.4 | 17.9 | 20.8 | 27.9 | 20.9 |
In January 2023, the highest daytime temperature in Rolla was 1.5°C.
While the minimum temperature at night dropped to -26.5°C.
The average nighttime and daytime temperatures during January in Rolla are -13°C and -6.6°C respectively.
The precipitation sum in January is about 9 mm.