Average annual temperature is 13.0 °C
Absolute maximum temperature: 34.6 °C
Absolute minimum temperature: -13.2 °C
Number of sunny days: 174 days
Number of rainy days: 177 days
Number of snow days: 14 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) | 13.5 | 10.8 | 23.6 | 26.8 | 28.9 | 34.6 | 33.1 | 34.6 | 30.5 | 22.5 | 22.1 | 16.8 |
| Average daytime temperature (°C) | 3.1 | 5.8 | 13.5 | 17.8 | 23.3 | 26.5 | 28.8 | 29.7 | 26.2 | 19.5 | 11.0 | 5.4 |
| Average temperature (°C) | -1.3 | 0.9 | 7.4 | 12.1 | 17.6 | 21.4 | 25.3 | 25.8 | 22.2 | 15.1 | 7.2 | 1.7 |
| Average night temperature (°C) | -5.4 | -2.7 | 2.7 | 7.8 | 13.1 | 17.6 | 22.7 | 22.6 | 19.0 | 11.1 | 3.5 | -2.0 |
| Absolute minimum temperature (°C) | -13.2 | -7.9 | -3.3 | 0.6 | 5.1 | 13.9 | 20.4 | 18.2 | 14.3 | 5.4 | -4.0 | -11.1 |
| 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 | 11.2 | 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) | 7.2 | 8.4 | 9.4 | 8.1 | 8.6 | 9.7 | 7.9 | 9.0 | 7.6 | 8.3 | 6.7 | 4.6 |
| Precipitation (mm) | 34 | 2 | 11 | 87 | 122 | 208 | 458 | 221 | 185 | 14 | 101 | 85 |
| Sunny days | 19 | 26 | 24 | 16 | 19 | 9 | 3 | 6 | 8 | 18 | 12 | 14 |
| Rainy days | 7 | 2 | 7 | 14 | 12 | 21 | 28 | 25 | 22 | 13 | 17 | 9 |
| Snow days | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 8 |
The largest precipitation sum in Chŏjŏn is at