Average annual temperature is -2.4 °C
Absolute maximum temperature: 18.4 °C
Absolute minimum temperature: -26.8 °C
Number of sunny days: 165 days
Number of rainy days: 115 days
Number of snow days: 85 days
Look at detailed online map of Tongtianheyan
* Weather data for Tongtianheyan China is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 2.8 | 1.4 | 3.8 | 10.9 | 15.5 | 16.2 | 18.3 | 18.4 | 13.4 | 13.4 | 3.0 | 0.7 |
| Average daytime temperature (°C) | -4.2 | -2.3 | 0.4 | 4.3 | 6.7 | 10.9 | 14.3 | 13.6 | 11.2 | 2.7 | -0.6 | -3.9 |
| Average temperature (°C) | -12.7 | -9.9 | -5.8 | -2.3 | 0.1 | 4.8 | 8.0 | 7.9 | 4.2 | -3.5 | -8.3 | -12.0 |
| Average night temperature (°C) | -21.0 | -17.9 | -12.8 | -8.6 | -6.9 | -1.1 | 1.8 | 2.9 | -2.4 | -9.3 | -15.4 | -19.0 |
| Absolute minimum temperature (°C) | -26.8 | -21.8 | -18.0 | -12.0 | -11.6 | -4.0 | -4.0 | -3.7 | -5.6 | -14.0 | -20.1 | -22.2 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 9.2 | 9.4 | 10.3 | 11.2 | 11.5 | 9.8 | 9.7 | 8.0 | 9.7 | 9.4 | 9.4 | 8.9 |
| Precipitation (mm) | 0 | 2 | 9 | 14 | 54 | 90 | 76 | 173 | 66 | 34 | 2 | 2 |
| Sunny days | 27 | 18 | 14 | 14 | 4 | 5 | 5 | 5 | 4 | 14 | 26 | 29 |
| Rainy days | 1 | 0 | 1 | 1 | 5 | 24 | 26 | 26 | 26 | 4 | 0 | 1 |
| Snow days | 3 | 10 | 16 | 15 | 22 | 1 | 0 | 0 | 0 | 13 | 4 | 1 |
The largest precipitation sum in Tongtianheyan is at