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![The first frost on Jeju Island this autumn is seen on Mount Halla on Wednesday. [YONHAP]](https://image.koreajoongangdaily.com/12015180.jpg?imageId=12015180&width=240&height=184&format=webp&format=jpg)
![Icicles are pictured in Daegwallyeong on Wednesday when the temperature in the region dropped to minus 4.6 degrees Celsius (23.72 degrees Fahrenheit). [YONHAP]](https://image.koreajoongangdaily.com/11427132.jpg?imageId=11427132&width=240&height=184&format=webp&format=jpg)
![First frost observed in Daegwallyeong, Gangwon [KOREA METEOROLOGICAL ADMINISTRATION, YONHAP]](https://image.koreajoongangdaily.com/10388117.jpg?imageId=10388117&width=240&height=184&format=webp&format=jpg)
![The first frost formed on trees on Mount Deokyu in Muju County, North Jeolla on Monday as the temperature dropped drastically below zero degrees centigrade. [YONHAP]](https://image.koreajoongangdaily.com/10342511.jpg?imageId=10342511&width=240&height=184&format=webp&format=jpg)
![Frost blankets trees along a trail on Mount Halla on Jeju Island on Sunday. [YONHAP]](https://image.koreajoongangdaily.com/10270431.jpg?imageId=10270431&width=240&height=184&format=webp&format=jpg)