Average temperature in December is -7.9 °C
Average daytime temperature is -6.1 °C
Average night temperature is -10.6 °C
Absolute maximum temperature: 2.8 °C
Absolute minimum temperature: -22 °C
Number of sunny days: 6
Number of rainy days: 7
Number of snow days: 18
Precipitation sum: 79 mm
* Weather data for Kostroma Russia is based on climate observations for 2023 year
| December (°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 | -4.6 | -4.6 | -6.4 | -7.8 | -9 | -11.8 | -14.6 | -16.1 | -19.8 | -14.8 | -8.9 | -8.1 | -10.7 | -10.1 | -8 | -8.9 | 0.2 | -0.8 | 2.8 | 1.4 | 0.4 | 1.2 | 1.2 | -0.2 | -3.4 | -3.2 | -2.8 | -5.6 | -4.7 | -6.1 | -5 |
| Apparent max temperature | -9 | -8.7 | -11.3 | -13.1 | -12.9 | -15.7 | -19.2 | -21.1 | -26.4 | -22.1 | -16.4 | -15.4 | -18.1 | -16.5 | -12.1 | -13.4 | -6.3 | -6.3 | -3 | -3.8 | -2.8 | -4.1 | -3.5 | -5.3 | -6.9 | -7.3 | -7.6 | -11.4 | -8.8 | -10.9 | -10.2 |
| Mean temperature | -5.4 | -6.5 | -7.4 | -9.3 | -11.1 | -15.5 | -16.7 | -18.5 | -20.6 | -17.7 | -11.1 | -9.2 | -13 | -12 | -8.9 | -10.9 | -3.7 | -1.5 | 0.9 | -0.3 | -0.9 | -0.5 | 0.9 | -2.2 | -5.6 | -5.7 | -4.8 | -6.8 | -6.6 | -6.9 | -7.7 |
| Apparent mean temperature | -11.4 | -11.9 | -15.6 | -16.3 | -19 | -24.8 | -25.2 | -28 | -28.3 | -27.4 | -22.5 | -18 | -21.1 | -20.3 | -17 | -17.5 | -13.8 | -8.1 | -5.9 | -7.8 | -8.2 | -7.5 | -5 | -11.1 | -14.4 | -17.6 | -11.2 | -13.6 | -15.4 | -13.8 | -17.4 |
| Minimum temperature | -6.4 | -7.9 | -8.9 | -11.9 | -14.1 | -20.3 | -20.6 | -22 | -21.8 | -20.4 | -15.4 | -10.6 | -13.8 | -13.4 | -9.8 | -12.5 | -9.5 | -2.6 | -1.2 | -3.7 | -4.3 | -3.1 | 0.3 | -6.7 | -9.8 | -12.3 | -6.5 | -7.8 | -11 | -8 | -11.6 |
| Apparent min temperature | -10 | -10.3 | -12.8 | -14.4 | -15.6 | -19.9 | -21.5 | -24 | -27.4 | -25.1 | -18.4 | -16.5 | -20.2 | -18.5 | -14.8 | -15.8 | -9.7 | -6.9 | -4.3 | -5.5 | -4.7 | -5.5 | -4.3 | -7.4 | -9.7 | -9.7 | -9.5 | -12.3 | -11 | -12.4 | -12.8 |
| December | 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) | 7 | 7 | 6.9 | 6.9 | 6.9 | 6.8 | 6.8 | 6.8 | 6.7 | 6.7 | 6.7 | 6.6 | 6.6 | 6.6 | 6.6 | 6.6 | 6.6 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.6 | 6.6 | 6.6 | 6.6 | 6.6 |
| Sunshine duration (h) | 0 | 0 | 0 | 0 | 0 | 0 | 3.3 | 0.1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.5 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0.1 | 0 | 0 | 0 | 0 |
| Precipitation (mm) | 0.3 | 0.6 | 3.9 | 3.1 | 0.5 | 0 | 0 | 0 | 0 | 2.5 | 3.6 | 8.5 | 3.3 | 0.8 | 9.6 | 1.7 | 4.7 | 0 | 6.4 | 0.1 | 1.8 | 0 | 6.9 | 3.9 | 0.2 | 0.9 | 1 | 0.3 | 0.4 | 5.4 | 8.7 |
| Precipitation hours | 3 | 5 | 12 | 18 | 4 | 0 | 0 | 0 | 0 | 14 | 17 | 24 | 20 | 8 | 23 | 13 | 6 | 0 | 7 | 1 | 10 | 0 | 19 | 8 | 2 | 8 | 10 | 3 | 4 | 15 | 20 |
| Wind speed (m/s) | 15.3 | 8.6 | 23.4 | 16.2 | 9.2 | 10.1 | 11.2 | 15.7 | 21.8 | 28.8 | 31.2 | 29 | 27.7 | 22.4 | 27 | 14 | 30.2 | 22.5 | 27 | 26.9 | 17.2 | 24.6 | 24.6 | 23.6 | 10 | 12.7 | 14.5 | 23.2 | 15.5 | 23.9 | 16.9 |
In December 2023, the highest daytime temperature in Kostroma was 2.8°C.
While the minimum temperature at night dropped to -22°C.
The average nighttime and daytime temperatures during December in Kostroma are -10.6°C and -6.1°C respectively.
The precipitation sum in December is about 79 mm.