Average annual temperature is 13.2 °C
Absolute maximum temperature: 36.4 °C
Absolute minimum temperature: -12.8 °C
Number of sunny days: 250 days
Number of rainy days: 110 days
Number of snow days: 5 days
Look at detailed online map of Heyun
* Weather data for Heyun 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) | 10.6 | 14.2 | 23.7 | 30.4 | 31.9 | 34.2 | 36.4 | 34.9 | 31.0 | 23.5 | 25.6 | 16.4 |
| Average daytime temperature (°C) | 4.9 | 8.9 | 16.9 | 19.5 | 24.1 | 28.3 | 31.7 | 29.9 | 25.8 | 19.9 | 12.3 | 4.7 |
| Average temperature (°C) | -0.5 | 2.9 | 10.1 | 13.5 | 18.7 | 22.7 | 25.9 | 24.7 | 20.4 | 14.0 | 6.3 | -0.3 |
| Average night temperature (°C) | -5.6 | -2.5 | 3.6 | 7.6 | 13.8 | 17.3 | 20.7 | 20.0 | 15.8 | 9.0 | 0.8 | -5.2 |
| Absolute minimum temperature (°C) | -12.4 | -5.5 | -2.5 | 0.7 | 5.8 | 12.4 | 16.6 | 13.9 | 8.5 | 4.5 | -4.7 | -12.8 |
| 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 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.6 | 7.1 | 8.9 | 7.8 | 7.5 | 9.4 | 10.0 | 9.6 | 7.5 | 7.6 | 7.8 | 7.3 |
| Precipitation (mm) | 7 | 12 | 14 | 72 | 89 | 65 | 78 | 108 | 70 | 17 | 14 | 23 |
| Sunny days | 29 | 19 | 27 | 18 | 18 | 18 | 19 | 14 | 11 | 25 | 27 | 25 |
| Rainy days | 0 | 7 | 4 | 12 | 13 | 12 | 12 | 17 | 19 | 6 | 3 | 5 |
| Snow days | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The largest precipitation sum in Heyun is at