Average temperature in January is 0.2 °C
Average daytime temperature is 5.3 °C
Average night temperature is -3.6 °C
Absolute maximum temperature: 8.9 °C
Absolute minimum temperature: -7.7 °C
Number of sunny days: 20
Number of rainy days: 4
Number of snow days: 7
Precipitation sum: 54 mm
* Weather data for Karaj Iran 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 | 7.2 | 7.5 | 8.4 | 7.9 | 3.9 | 6.1 | 7.8 | 7.6 | 7.5 | 0.8 | 1.1 | 0.9 | 1.2 | 2.5 | 1.1 | 6.5 | 6.5 | 6.9 | 7 | 6.7 | 6 | 5 | 4.3 | 4 | 4 | 4 | 3 | 6.5 | 8.9 | 8 | 6.3 |
| Apparent max temperature | 3.4 | 4.1 | 4.3 | 2.9 | 1 | 3.4 | 3.1 | 3.4 | 3.5 | -3.3 | -2.5 | -3.5 | -3.9 | -2.1 | -3.8 | 3.2 | 2.8 | 2.5 | 2.9 | 3.1 | 2.5 | 1.2 | 0.4 | -0.1 | 0.3 | 0 | 0.1 | 2 | 4 | 4.7 | 2.1 |
| Mean temperature | 1.4 | 2 | 2.8 | 2.4 | 1.9 | 1.7 | 2.7 | 3 | 2 | -1.7 | -1.3 | -2.1 | -3.4 | -1.7 | -2.1 | -0.5 | 0 | 0.2 | -0.2 | 0 | -0.7 | -2.1 | -2.7 | -2.5 | -1.7 | -0.6 | -0.7 | -0.4 | 2.8 | 3.5 | 4 |
| Apparent mean temperature | -6.8 | -7.6 | -5.1 | -5.9 | -4.3 | -4.9 | -5.2 | -4.6 | -6.5 | -7.4 | -6.9 | -9.5 | -10.2 | -9.1 | -7.8 | -8.7 | -8.8 | -8.5 | -8.4 | -8.5 | -9.5 | -10.4 | -12.2 | -11.1 | -10.2 | -10.8 | -9.5 | -9.9 | -6 | -3.6 | -1.6 |
| Minimum temperature | -2.5 | -2.9 | -0.8 | -1.6 | -0.2 | -1 | -1.2 | -0.7 | -1.9 | -3.5 | -3.2 | -5.7 | -6 | -5 | -3.9 | -4.7 | -4.5 | -3.9 | -4.1 | -4.4 | -5.5 | -6.2 | -7.7 | -6.7 | -5.8 | -6.1 | -5 | -5.4 | -1.1 | -0.7 | 1.7 |
| Apparent min temperature | -2.5 | -2 | -1.4 | -1.6 | -1.2 | -1.3 | -1.4 | -0.7 | -2 | -5.9 | -4.8 | -5.8 | -7.8 | -5.8 | -5.9 | -4.4 | -4.1 | -4.2 | -4.3 | -4.1 | -4.7 | -6.3 | -7 | -6.8 | -5.9 | -4.7 | -4.4 | -5 | -1.3 | 0.5 | 0.3 |
| 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) | 9.8 | 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 | 10.2 | 10.3 | 10.3 | 10.3 | 10.3 | 10.4 | 10.4 |
| Sunshine duration (h) | 8.8 | 8.8 | 8.8 | 7.8 | 0.8 | 7 | 8.8 | 8.2 | 8.8 | 1.4 | 2.1 | 4.1 | 8.9 | 7 | 2.3 | 8.8 | 8.6 | 9 | 9 | 9.1 | 9.1 | 9.1 | 9.2 | 9.2 | 9.2 | 8.9 | 7.5 | 9 | 7 | 6.9 | 1.2 |
| Precipitation (mm) | 0 | 0 | 0 | 3.9 | 1.8 | 0 | 0 | 0 | 0.8 | 0.5 | 1.8 | 0.4 | 0 | 0.4 | 2.4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.2 | 0 | 0 | 17.4 | 24.1 |
| Precipitation hours | 0 | 0 | 0 | 3 | 6 | 0 | 0 | 0 | 5 | 5 | 12 | 4 | 0 | 3 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 19 | 21 |
| Wind speed (m/s) | 8.6 | 7.6 | 6.9 | 13.7 | 6.9 | 8 | 14.7 | 11.9 | 14.5 | 10.5 | 8.1 | 10.6 | 12.4 | 9.8 | 13.6 | 8.4 | 10.3 | 10 | 8.7 | 7.6 | 6.9 | 8.7 | 8.5 | 8.9 | 8.4 | 8.8 | 8 | 13 | 15.6 | 8.9 | 18.8 |
In January 2023, the highest daytime temperature in Karaj was 8.9°C.
While the minimum temperature at night dropped to -7.7°C.
The average nighttime and daytime temperatures during January in Karaj are -3.6°C and 5.3°C respectively.
The precipitation sum in January is about 54 mm.