Average annual temperature is 14.9 °C
Absolute maximum temperature: 39.4 °C
Absolute minimum temperature: -16.7 °C
Number of sunny days: 258 days
Number of rainy days: 101 days
Number of snow days: 6 days
Look at detailed online map of Siwei
* Weather data for Siwei 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) | 13.7 | 16.1 | 27.8 | 30.5 | 36.7 | 39.4 | 37.8 | 35.4 | 32.5 | 28.8 | 28.8 | 20.7 |
| Average daytime temperature (°C) | 5.3 | 8.7 | 18.1 | 20.2 | 26.6 | 32.5 | 33.6 | 30.3 | 27.4 | 23.4 | 12.0 | 3.3 |
| Average temperature (°C) | 0.4 | 3.2 | 12.1 | 14.9 | 21.1 | 26.7 | 28.6 | 25.8 | 22.4 | 17.4 | 7.0 | -1.6 |
| Average night temperature (°C) | -4.0 | -1.4 | 6.3 | 10.5 | 16.7 | 21.1 | 24.2 | 22.0 | 18.0 | 12.6 | 2.3 | -5.7 |
| Absolute minimum temperature (°C) | -14.4 | -5.3 | -1.1 | 4.8 | 11.3 | 15.8 | 20.5 | 16.5 | 12.4 | 7.8 | -5.2 | -16.7 |
| 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 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.8 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.2 | 9.7 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.6 | 8.0 | 9.6 | 7.8 | 7.8 | 10.3 | 9.9 | 10.0 | 8.5 | 8.5 | 7.0 | 6.4 |
| Precipitation (mm) | 7 | 5 | 2 | 81 | 38 | 51 | 129 | 116 | 77 | 1 | 24 | 32 |
| Sunny days | 26 | 26 | 28 | 15 | 19 | 18 | 17 | 15 | 18 | 28 | 23 | 25 |
| Rainy days | 3 | 1 | 3 | 15 | 12 | 12 | 14 | 16 | 12 | 3 | 6 | 4 |
| Snow days | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
The largest precipitation sum in Siwei is at