Average temperature in January is -1.2 °C
Average daytime temperature is 2.5 °C
Average night temperature is -3.8 °C
Absolute maximum temperature: 9.6 °C
Absolute minimum temperature: -24.3 °C
Number of sunny days: 12
Number of rainy days: 11
Number of snow days: 8
Precipitation sum: 60 mm
* Weather data for St. Charles 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 | 8 | 6 | 9 | 9.3 | 0.2 | 0.2 | 1.2 | 0.9 | 5.5 | 7.3 | 9.6 | 6.9 | 1.7 | 0.2 | 5.4 | 7.7 | 9 | 3.8 | 3.9 | 1.2 | 1.7 | 1.1 | -1.9 | 2.6 | 1.8 | -0.1 | 2.4 | -1.1 | -2.2 | -8.4 | -13.9 |
| Apparent max temperature | 5.9 | 2.9 | 7.7 | 7.2 | -3.9 | -3.9 | -2.3 | -2.8 | 1.2 | 4.6 | 7.4 | 4.9 | -2.8 | -4.1 | -0.4 | 4 | 5.6 | -0.2 | 1.5 | -3.8 | -2.9 | -1.9 | -7.1 | -1 | -2.5 | -4 | -3.1 | -7.5 | -6.8 | -13.2 | -19.4 |
| Mean temperature | 2.8 | 1.8 | 4.2 | 3.2 | -0.5 | -0.8 | -3.1 | -1.8 | -1.8 | 2.5 | 3.9 | 3.6 | -0.2 | -3.3 | -1.3 | 4.1 | 5.2 | 1.7 | 2.4 | 0 | -1.6 | -1.3 | -3.8 | -1.4 | -0.6 | -2.1 | -6 | -6.1 | -4.3 | -11.9 | -18.6 |
| Apparent mean temperature | -4.3 | -4 | -2 | -4 | -5.7 | -6.6 | -10.6 | -7.7 | -10 | -5 | -2.5 | -3.3 | -7.3 | -9 | -9.6 | -3.3 | -2.5 | -4.8 | -5.3 | -6.5 | -8.4 | -6.5 | -11.5 | -9.7 | -5.9 | -8.9 | -18 | -14 | -12.8 | -19.8 | -29.8 |
| Minimum temperature | -0.4 | -0.5 | 1.9 | -0.1 | -1.3 | -2.6 | -6.4 | -4 | -5.3 | -1.5 | 0.4 | 1.1 | -1.9 | -5.1 | -4.3 | 2.6 | 2.9 | -0.6 | 1.4 | -1.1 | -4.2 | -3 | -6.7 | -4.2 | -2.2 | -3.5 | -12.5 | -9.8 | -7.2 | -14.7 | -24.3 |
| Apparent min temperature | -0.4 | -1.4 | 1 | -0.3 | -4.8 | -5.1 | -6.9 | -5.2 | -6.3 | -1 | 1.1 | -0.2 | -5.2 | -7.5 | -6.7 | -1 | 0.6 | -2.4 | -1.5 | -5.3 | -5.7 | -4.6 | -8.9 | -5.8 | -4.3 | -6.7 | -11.7 | -11 | -9.3 | -17.2 | -23.8 |
| 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) | 9.2 | 9.2 | 9.2 | 9.2 | 9.2 | 9.3 | 9.3 | 9.3 | 9.3 | 9.3 | 9.4 | 9.4 | 9.4 | 9.4 | 9.5 | 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 | 9.9 | 10 |
| Sunshine duration (h) | 6.5 | 3.3 | 0 | 0 | 0 | 8 | 8 | 1.5 | 8 | 8.1 | 5.6 | 0 | 2.4 | 7.4 | 7.1 | 0 | 0.4 | 0 | 0 | 1 | 5.6 | 0 | 6.7 | 7.4 | 0.2 | 0 | 0 | 0 | 4.8 | 7.1 | 8.7 |
| Precipitation (mm) | 2.9 | 0 | 12.8 | 0.1 | 1.6 | 0.4 | 0 | 0 | 0 | 0.3 | 0.1 | 0 | 0.7 | 0 | 0 | 5.9 | 0.3 | 0 | 14.9 | 1.2 | 0 | 2.2 | 0 | 0 | 7.4 | 2.4 | 0.7 | 3 | 2.6 | 0.7 | 0 |
| Precipitation hours | 5 | 0 | 13 | 1 | 12 | 4 | 0 | 0 | 0 | 1 | 1 | 0 | 4 | 0 | 0 | 12 | 3 | 0 | 16 | 6 | 0 | 15 | 0 | 0 | 16 | 19 | 4 | 8 | 8 | 6 | 0 |
| Wind speed (m/s) | 12.3 | 15 | 19.2 | 17.1 | 15.9 | 14.8 | 9.7 | 9.5 | 13.9 | 15.8 | 10.9 | 21.9 | 19.2 | 14.7 | 21.1 | 22.7 | 26.3 | 18.3 | 31.9 | 21.3 | 13.6 | 10.1 | 23.1 | 18.7 | 13.5 | 18.6 | 29.6 | 25 | 17.6 | 16.1 | 12.7 |
In January 2023, the highest daytime temperature in St. Charles was 9.6°C.
While the minimum temperature at night dropped to -24.3°C.
The average nighttime and daytime temperatures during January in St. Charles are -3.8°C and 2.5°C respectively.
The precipitation sum in January is about 60 mm.