Average temperature in January is 0.4 °C
Average daytime temperature is 3 °C
Average night temperature is -2 °C
Absolute maximum temperature: 12.4 °C
Absolute minimum temperature: -10.8 °C
Number of sunny days: 9
Number of rainy days: 12
Number of snow days: 10
Precipitation sum: 231 mm
* Weather data for St. John's Canada 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 | 5.3 | 4.7 | 0 | 4 | 2.6 | -2.1 | -1 | -0.2 | 0.7 | -0.7 | -2.4 | -4.7 | -1.4 | 10.9 | 12.4 | 4.7 | 7.4 | 6.5 | 4 | 2 | 0.6 | 0.7 | 2.2 | 7.2 | 2.5 | 1.3 | 8.3 | 0.7 | 4 | 6 | 2.7 |
| Apparent max temperature | 2.9 | 2 | -4.1 | -1 | -1.5 | -5.9 | -5.1 | -3.3 | -4.4 | -6.2 | -6.5 | -9.8 | -7.3 | 5.5 | 8.2 | 1.6 | 2.3 | 3 | 0.2 | -2.1 | -6.2 | -7.1 | -2.6 | 1.4 | -3.9 | -5.4 | 2 | -4.8 | -3 | 0.3 | -0.7 |
| Mean temperature | 4.6 | 1.8 | -0.7 | 0.4 | -2.9 | -4.1 | -1.7 | -0.9 | -1.8 | -2.8 | -3.3 | -6.6 | -6.4 | 6.8 | 8.2 | 1.8 | 6 | 5.5 | 2.7 | 0.6 | 0.3 | -0.2 | -0.8 | 4.2 | 0.6 | -2.1 | 4.5 | -2.1 | -1 | 0.8 | 0.7 |
| Apparent mean temperature | 0.4 | -7.7 | -6.6 | -7.3 | -13.3 | -11 | -7.6 | -5.8 | -12 | -10.2 | -10.4 | -13.9 | -16.3 | -6.9 | -5 | -5.6 | 0.7 | 0 | -4.5 | -5.8 | -7.8 | -8.7 | -9.3 | -7.8 | -8.1 | -9.1 | -7.7 | -8.9 | -8.7 | -6.9 | -4.4 |
| Minimum temperature | 3.6 | -0.1 | -1.4 | -3.1 | -6.8 | -6.3 | -2.8 | -1.7 | -5.6 | -3.6 | -4.8 | -7.6 | -10.8 | 0.1 | 1 | 0.9 | 5.1 | 3.6 | 1.5 | -0.2 | -0.1 | -1.5 | -3.5 | 1.3 | -2.1 | -5.3 | 0.3 | -4.2 | -3.5 | -3.5 | -0.8 |
| Apparent min temperature | 1.3 | -3.3 | -5.6 | -4.4 | -8.7 | -8.6 | -6.5 | -4.4 | -7.4 | -8.4 | -7.8 | -12.4 | -11.5 | 0.1 | 3.7 | -3.5 | 1.5 | 1 | -1.9 | -4.5 | -6.7 | -7.9 | -6.3 | -3.3 | -5.6 | -7.4 | -2.7 | -7.1 | -6.4 | -4.4 | -2.6 |
| 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) | 8.5 | 8.5 | 8.5 | 8.6 | 8.6 | 8.6 | 8.6 | 8.7 | 8.7 | 8.7 | 8.7 | 8.8 | 8.8 | 8.8 | 8.9 | 8.9 | 8.9 | 9 | 9 | 9 | 9.1 | 9.1 | 9.2 | 9.2 | 9.2 | 9.3 | 9.3 | 9.4 | 9.4 | 9.5 | 9.5 |
| Sunshine duration (h) | 0 | 1 | 5 | 1.5 | 6.3 | 0.2 | 0.6 | 1.4 | 2 | 0 | 1.8 | 6.7 | 5.1 | 1.5 | 0 | 0 | 0 | 2.3 | 1.9 | 0 | 0 | 0.1 | 0 | 0.3 | 8.1 | 5.3 | 2.7 | 8.2 | 7.2 | 0 | 3.7 |
| Precipitation (mm) | 23.2 | 5.1 | 0 | 0 | 0.4 | 0 | 1.5 | 1.4 | 1.6 | 12.7 | 1 | 0.2 | 0.2 | 2.1 | 22 | 19.4 | 5.3 | 10 | 17 | 1.2 | 43.9 | 13.7 | 0 | 27 | 0 | 0 | 10.4 | 0 | 0 | 11.9 | 0 |
| Precipitation hours | 13 | 13 | 0 | 0 | 4 | 0 | 5 | 6 | 10 | 13 | 7 | 1 | 1 | 10 | 13 | 24 | 15 | 8 | 9 | 8 | 24 | 21 | 0 | 18 | 0 | 0 | 9 | 0 | 0 | 11 | 0 |
| Wind speed (m/s) | 23.5 | 42.2 | 19.9 | 22.6 | 25.6 | 17.4 | 15.3 | 11.4 | 26.8 | 31.4 | 17.2 | 23.2 | 22.8 | 48.8 | 36.4 | 30.6 | 31.1 | 28.5 | 27.4 | 22.7 | 42.3 | 47.1 | 26.6 | 54.2 | 31 | 41.4 | 54.4 | 22.7 | 34.5 | 39.7 | 12.2 |
In January 2023, the highest daytime temperature in St. John's was 12.4°C.
While the minimum temperature at night dropped to -10.8°C.
The average nighttime and daytime temperatures during January in St. John's are -2°C and 3°C respectively.
The precipitation sum in January is about 231 mm.