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Chilly Autumn Weather All Day; Seoul to Drop to 5°C Tomorrow Morning

Published : Oct 21, 2026 6:34 AM

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As cold air gradually moves south and chilly winds blow, today (October 21) will remain chilly throughout the day.

Starting at 14.2°C (58°F) this morning, Seoul's temperature will struggle to rise during the day, peaking at just 16°C (61°F)—about 7°C lower than yesterday afternoon.

Tomorrow morning, the temperature in Seoul is expected to plummet to 5°C (41°F), marking the coolest morning of this autumn.

Along with the southern coast and Jeju Island, where rain is currently falling, light rain of less than 5 mm is expected in the central regions and Jeonbuk until this morning.

Strong winds will also blow nationwide today.

Starting with a current temperature of 14.2°C (58°F) in Daejeon, the daytime high will hover around 18°C (64°F).

(Weather forecaster Park Se-rim)