Premature spring warmth is expected to continue through Saturday across South Korea, with daytime highs reaching up to 20 degrees Celsius before temperatures return to seasonal averages starting Sunday, weather authorities said Friday. According to the Korea Meteorological Administration, clear skies and mild conditions are forecast nationwide on Saturday, with daytime highs between 6-20 degrees Celsius. Morning lows are expected to fall as low as minus 2 C in some areas, but as high as 13 C in