Friday the 23rd will bring mostly cloudy skies nationwide with chilly morning temperatures, though the early cold snap is expected to ease as temperatures climb from midday.
Cold air continued to flow in from the northwest, pushing morning lows to a range of 3 to 14 degrees Celsius, the Korea Meteorological Administration said on the 22nd.
Morning temperatures will stay below 10 degrees across most of the country. Northern and inland eastern Gyeonggi Province, along with inland and mountainous areas of Gangwon Province, will drop below 5 degrees.
Expected morning lows for major cities are 7 degrees in Seoul, 8 degrees in Incheon, 4 degrees in Chuncheon, 9 degrees in Gangneung, 6 degrees in Daejeon, 7 degrees in Daegu, 7 degrees in Jeonju, 7 degrees in Gwangju, 14 degrees in Busan and 18 degrees in Jeju.
Daytime highs will rise to between 18 and 23 degrees, leaving a daily temperature swing of around 15 degrees. Highs are forecast at 21 degrees in Seoul, 21 degrees in Incheon, 21 degrees in Chuncheon, 19 degrees in Gangneung, 22 degrees in Daejeon, 22 degrees in Daegu, 23 degrees in Jeonju, 23 degrees in Gwangju, 22 degrees in Busan and 22 degrees in Jeju.
Frost will form in scattered areas, mainly inland. The weather agency advised farmers to protect crops, noting that ice may form in parts of inland and mountainous Gangwon Province.
Rain is also forecast to begin in Jeju in the afternoon before spreading to southern regions. Expected rainfall totals 5 to 30 millimeters in Gwangju and South Jeolla Province, 5 to 30 millimeters in Busan, Ulsan and South Gyeongsang Province, 30 to 80 millimeters in Jeju Special Self-Governing Province excluding its northern and western areas, and 10 to 40 millimeters in northern and western Jeju.
Fine dust levels will be rated "good" in all regions.