Average annual temperature is 13.1 °C
Absolute maximum temperature: 34.6 °C
Absolute minimum temperature: -13.3 °C
Number of sunny days: 206 days
Number of rainy days: 154 days
Number of snow days: 5 days
Look at detailed online map of Chŏjŏn
* Weather data for Chŏjŏn South 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) | 14.5 | 14.3 | 22.8 | 27.2 | 31.3 | 34.6 | 33.4 | 34.5 | 30.2 | 23.2 | 24.6 | 16.1 |
| Average daytime temperature (°C) | 5.1 | 8.7 | 16.5 | 18.4 | 22.8 | 28.3 | 28.8 | 30.2 | 26.3 | 20.1 | 12.6 | 6.9 |
| Average temperature (°C) | -0.2 | 2.4 | 8.9 | 12.0 | 17.1 | 22.3 | 24.6 | 25.7 | 21.8 | 13.4 | 6.8 | 1.8 |
| Average night temperature (°C) | -4.2 | -2.2 | 2.2 | 6.3 | 11.8 | 17.3 | 21.6 | 22.0 | 18.0 | 7.8 | 2.0 | -2.1 |
| Absolute minimum temperature (°C) | -13.3 | -5.9 | -4.1 | -0.4 | 3.7 | 13.1 | 17.1 | 17.5 | 12.6 | 3.2 | -5.0 | -9.7 |
| 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 | 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) | 7.4 | 7.5 | 8.8 | 8.0 | 7.8 | 9.3 | 7.0 | 9.5 | 7.5 | 8.9 | 7.7 | 6.7 |
| Precipitation (mm) | 31 | 23 | 39 | 70 | 115 | 148 | 368 | 309 | 184 | 5 | 64 | 72 |
| Sunny days | 25 | 20 | 24 | 16 | 17 | 13 | 6 | 7 | 9 | 25 | 22 | 22 |
| Rainy days | 4 | 7 | 7 | 14 | 14 | 17 | 25 | 24 | 21 | 6 | 8 | 7 |
| Snow days | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
The largest precipitation sum in Chŏjŏn is at