Average annual temperature is 7.2 °C
Absolute maximum temperature: 31.8 °C
Absolute minimum temperature: -31.4 °C
Number of sunny days: 201 days
Number of rainy days: 139 days
Number of snow days: 25 days
Look at detailed online map of Heyan
* Weather data for Heyan 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) | 3.7 | 7.7 | 19.8 | 22.7 | 26.7 | 31.8 | 31.4 | 30.5 | 28.4 | 21.1 | 17.0 | 7.9 |
| Average daytime temperature (°C) | -6.4 | -0.9 | 8.6 | 12.9 | 20.6 | 25.2 | 27.1 | 25.8 | 22.3 | 14.5 | 0.9 | -7.2 |
| Average temperature (°C) | -10.8 | -6.1 | 2.7 | 7.5 | 15.1 | 19.9 | 22.8 | 21.5 | 17.3 | 9.8 | -3.5 | -11.2 |
| Average night temperature (°C) | -15.7 | -10.8 | -1.9 | 2.7 | 10.1 | 15.3 | 19.2 | 17.8 | 13.0 | 5.6 | -6.9 | -15.7 |
| Absolute minimum temperature (°C) | -26.3 | -16.8 | -8.9 | -4.1 | 4.9 | 10.8 | 16.3 | 12.7 | 7.4 | -1.7 | -17.6 | -31.4 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 13.0 | 14.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.5 | 10.6 | 11.9 | 13.4 | 14.6 | 15.2 | 14.9 | 13.8 | 12.5 | 11.1 | 9.8 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 6.9 | 7.7 | 10.1 | 8.7 | 10.3 | 10.3 | 9.2 | 8.4 | 9.2 | 8.3 | 5.7 | 5.5 |
| Precipitation (mm) | 12 | 6 | 11 | 63 | 46 | 122 | 174 | 145 | 33 | 64 | 105 | 22 |
| Sunny days | 22 | 22 | 25 | 17 | 18 | 8 | 7 | 9 | 19 | 18 | 16 | 20 |
| Rainy days | 2 | 0 | 6 | 13 | 13 | 22 | 24 | 22 | 11 | 12 | 10 | 4 |
| Snow days | 7 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 | 7 |
The largest precipitation sum in Heyan is at