Average annual temperature is 10.2 °C
Absolute maximum temperature: 32.9 °C
Absolute minimum temperature: -23.7 °C
Number of sunny days: 214 days
Number of rainy days: 136 days
Number of snow days: 15 days
Look at detailed online map of Tonghyŏn
* Weather data for Tonghyŏn North Korea is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 7.5 | 6.9 | 15.2 | 19.9 | 28.0 | 30.3 | 31.2 | 32.9 | 29.9 | 22.2 | 20.1 | 11.7 |
| Average daytime temperature (°C) | -2.1 | 3.3 | 9.0 | 14.8 | 20.2 | 24.5 | 27.5 | 28.2 | 25.5 | 18.1 | 5.9 | -2.3 |
| Average temperature (°C) | -6.3 | -1.5 | 3.9 | 9.9 | 15.8 | 20.5 | 24.3 | 24.7 | 21.0 | 13.5 | 1.9 | -6.2 |
| Average night temperature (°C) | -11.0 | -5.1 | -0.3 | 5.7 | 12.0 | 17.2 | 21.7 | 21.7 | 16.9 | 9.6 | -2.1 | -10.7 |
| Absolute minimum temperature (°C) | -21.7 | -8.6 | -7.2 | -0.9 | 7.9 | 12.4 | 19.2 | 15.8 | 9.4 | 4.4 | -9.1 | -23.7 |
| 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 | 15.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 12.0 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.2 | 10.0 | 9.4 |
| 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) | 7.1 | 8.0 | 9.2 | 8.6 | 9.0 | 10.2 | 8.5 | 8.4 | 9.9 | 8.0 | 6.6 | 6.2 |
| Precipitation (mm) | 26 | 3 | 3 | 94 | 129 | 68 | 189 | 301 | 33 | 68 | 88 | 45 |
| Sunny days | 20 | 27 | 24 | 15 | 20 | 11 | 10 | 9 | 20 | 19 | 19 | 20 |
| Rainy days | 4 | 1 | 7 | 15 | 11 | 19 | 21 | 22 | 10 | 12 | 9 | 5 |
| Snow days | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 6 |
The largest precipitation sum in Tonghyŏn is at