Average temperature in January is -0.7 °C
Average daytime temperature is 4.6 °C
Average night temperature is -4.8 °C
Absolute maximum temperature: 11.1 °C
Absolute minimum temperature: -11.9 °C
Number of sunny days: 21
Number of rainy days: 6
Number of snow days: 4
Precipitation sum: 21 mm
* Weather data for Riverside 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 | 10.1 | 6.4 | 2.3 | 3.2 | 1.7 | 9 | 4.4 | 3.6 | 6.4 | 11.1 | 6.9 | 5.4 | 8.6 | 10.7 | 8.8 | 7.1 | 6.4 | 3.3 | 0.5 | 5.7 | 0.2 | -1 | 2 | 0.5 | -1 | -1.7 | -1.8 | 4.3 | 5.9 | 7.1 | 5.6 |
| Apparent max temperature | 6.2 | 2.8 | -1.9 | -3.1 | -2 | 4.5 | -1 | -0.7 | 3.1 | 6.8 | 2.3 | 0.4 | 4 | 5.9 | 5.7 | 2.4 | 1.2 | -1.4 | -3.5 | -0.5 | -5.5 | -4.8 | -3.5 | -4.5 | -5.8 | -5.9 | -5.6 | 0.2 | -0.3 | 0 | 2 |
| Mean temperature | 4.5 | 3.2 | 0.1 | -0.6 | -3.2 | 2.1 | -1.4 | -2.3 | 0.5 | 4.4 | 4.1 | -0.2 | -0.4 | 2.1 | 3.9 | 2.3 | 2.3 | -0.8 | -3.1 | -2.9 | -3.2 | -6.8 | -2.4 | -3.8 | -3.2 | -7.1 | -6.1 | -2.4 | -0.8 | 1.1 | 0 |
| Apparent mean temperature | -3.4 | -3.3 | -7.4 | -8.5 | -11.5 | -6.1 | -10.3 | -13.3 | -8.6 | -5 | -4.4 | -10.2 | -10.3 | -8.3 | -3.1 | -5.6 | -3.7 | -9.7 | -10.9 | -12.2 | -10.8 | -16.5 | -10.1 | -13.8 | -10.7 | -16.1 | -14.7 | -11.1 | -11.1 | -8.9 | -9.6 |
| Minimum temperature | 0.2 | 0.2 | -3.3 | -3.4 | -7 | -2.6 | -5.5 | -8.3 | -4.4 | -1.1 | 0.1 | -5.2 | -5.8 | -4.2 | 0.8 | -1.5 | -0.1 | -3.4 | -5.9 | -7.7 | -6.2 | -11.9 | -4.6 | -8.5 | -5.5 | -11.1 | -9.3 | -7.3 | -6.5 | -5 | -5.5 |
| Apparent min temperature | 1.4 | -0.7 | -4.7 | -5.9 | -7.6 | -2 | -6.1 | -6.7 | -3.5 | 0.6 | -1.1 | -4.9 | -4.8 | -1.9 | -0.4 | -2.1 | -2.1 | -5.8 | -7.8 | -7.8 | -8 | -11.1 | -7.5 | -9.1 | -8.2 | -11.7 | -10.8 | -6.5 | -5.5 | -3.9 | -4.1 |
| 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) | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 10 | 10 | 10 | 10 | 10 | 10.1 | 10.1 | 10.1 | 10.1 | 10.2 | 10.2 | 10.2 | 10.3 | 10.3 | 10.3 | 10.3 | 10.4 | 10.4 |
| Sunshine duration (h) | 0.2 | 5.4 | 8 | 8.2 | 8.7 | 8.2 | 8.9 | 8.9 | 8.9 | 8.8 | 8.7 | 8.9 | 9 | 8.7 | 2.2 | 4.9 | 2.6 | 7.3 | 9.1 | 8.4 | 8.2 | 9.2 | 1.2 | 8.7 | 7.9 | 9.3 | 9.4 | 9.4 | 9.4 | 9.4 | 9.5 |
| Precipitation (mm) | 0 | 12.3 | 0.7 | 0.4 | 0 | 0 | 0 | 0 | 0 | 0 | 0.2 | 0 | 0 | 0 | 2.7 | 0.1 | 3 | 0.2 | 0 | 0 | 0.6 | 0 | 0 | 0 | 0.5 | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation hours | 0 | 13 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 12 | 1 | 9 | 2 | 0 | 0 | 4 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 |
| Wind speed (m/s) | 14.6 | 21.4 | 23.4 | 31 | 19.8 | 21.9 | 19.4 | 12.1 | 9.8 | 15.5 | 30.3 | 16.1 | 15.5 | 14.3 | 32 | 23.9 | 25.1 | 24.5 | 16.6 | 25.7 | 22.5 | 9.7 | 19.6 | 26.6 | 21.3 | 10.9 | 15.9 | 18.4 | 31.1 | 31 | 15.9 |
In January 2023, the highest daytime temperature in Riverside was 11.1°C.
While the minimum temperature at night dropped to -11.9°C.
The average nighttime and daytime temperatures during January in Riverside are -4.8°C and 4.6°C respectively.
The precipitation sum in January is about 21 mm.