Average temperature in January is 2.1 °C
Average daytime temperature is 7.1 °C
Average night temperature is -1.7 °C
Absolute maximum temperature: 11 °C
Absolute minimum temperature: -5.3 °C
Number of sunny days: 20
Number of rainy days: 9
Number of snow days: 2
Precipitation sum: 45 mm
* Weather data for Rey Iran 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 | 9 | 9.3 | 10 | 8.5 | 6.6 | 6 | 9.9 | 10.4 | 10.3 | 2.8 | 1.8 | 3.2 | 2.7 | 3.5 | 2.2 | 8 | 7.8 | 9.7 | 9 | 8.6 | 7.8 | 7.3 | 6.6 | 6.5 | 6.1 | 6.1 | 5.6 | 7.3 | 11 | 10.5 | 7 |
| Apparent max temperature | 5.9 | 5.9 | 6.9 | 4.8 | 3 | 3.5 | 5.3 | 6.3 | 5.8 | 0 | -2 | -0.7 | -1.8 | -0.3 | -1.9 | 4.9 | 4.5 | 6.5 | 5.3 | 5 | 4.4 | 3.2 | 2.9 | 2.9 | 2.3 | 2.5 | 2 | 4 | 5.6 | 6.3 | 4.4 |
| Mean temperature | 3.4 | 3.5 | 3.8 | 3.7 | 3.1 | 2.4 | 3.8 | 4.4 | 4.7 | 1.6 | 0.4 | 0.1 | -1.6 | -0.7 | -1.1 | 1.2 | 2.1 | 2.9 | 2.1 | 2 | 1.4 | 1 | 0.6 | 0.7 | 0.5 | 1.3 | 1.5 | 1.4 | 4.6 | 5.9 | 5.8 |
| Apparent mean temperature | -4.4 | -5.1 | -5.7 | -6 | -2.7 | -4 | -4.5 | -3.1 | -2.3 | -2.5 | -4 | -7.3 | -8.1 | -8.5 | -6.6 | -9 | -6.3 | -6.1 | -6.5 | -6.9 | -7.7 | -7.6 | -8 | -7.6 | -8.1 | -8.2 | -5.3 | -7.3 | -4.1 | -1.2 | 1.5 |
| Minimum temperature | -0.3 | -0.8 | -0.8 | -1.6 | 0.7 | -0.6 | -1 | 0.7 | 0.7 | 0.3 | -1 | -3.3 | -4.2 | -4.4 | -3.3 | -5.3 | -2.4 | -2.2 | -2.4 | -2.5 | -3.2 | -3.4 | -3.6 | -3.5 | -3.6 | -3.7 | -1.4 | -3.1 | -0.5 | 1.9 | 4.6 |
| Apparent min temperature | -0.2 | -0.2 | -0.1 | 0 | 0 | -0.5 | 0.4 | 0.9 | 1.4 | -1.2 | -2.9 | -3.5 | -5.6 | -4.5 | -4.7 | -2.2 | -1.4 | -0.6 | -1.7 | -1.9 | -2.6 | -3 | -3.4 | -3.2 | -3.5 | -2.6 | -2 | -2.2 | 0.8 | 2.9 | 3.1 |
| 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 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 10 | 10 | 10 | 10 | 10 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.2 | 10.2 | 10.2 | 10.2 | 10.3 | 10.3 | 10.3 | 10.4 | 10.4 | 10.4 |
| Sunshine duration (h) | 8.8 | 8.8 | 8.8 | 8.8 | 2.5 | 4.6 | 8.8 | 8.1 | 8.8 | 1 | 0 | 6.7 | 8.8 | 7 | 1.6 | 8.9 | 7.8 | 8.9 | 9 | 9 | 9 | 9.1 | 9.1 | 9.1 | 9 | 9.2 | 3.8 | 8.9 | 7.9 | 7.9 | 1 |
| Precipitation (mm) | 0 | 0 | 0 | 1.2 | 8.3 | 2.3 | 0 | 0.3 | 0 | 0.7 | 1.1 | 0 | 0 | 0 | 5.8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.6 | 0 | 2.9 | 5.3 | 16.1 |
| Precipitation hours | 0 | 0 | 0 | 3 | 12 | 7 | 0 | 2 | 0 | 7 | 5 | 0 | 0 | 0 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 2 | 15 | 23 |
| Wind speed (m/s) | 9.8 | 6.1 | 8.8 | 10.5 | 11.8 | 9.3 | 14.8 | 17.3 | 12.9 | 6.9 | 13 | 11.4 | 9.9 | 7.1 | 11 | 7.5 | 9.3 | 7.1 | 8.9 | 6.5 | 8.7 | 9.5 | 10.8 | 8 | 9 | 8.5 | 8.7 | 7.2 | 22.8 | 14.8 | 9.7 |
In January 2023, the highest daytime temperature in Rey was 11°C.
While the minimum temperature at night dropped to -5.3°C.
The average nighttime and daytime temperatures during January in Rey are -1.7°C and 7.1°C respectively.
The precipitation sum in January is about 45 mm.