
AI-generated summary
The day before, the unusual heat continued, with daytime temperatures exceeding 30 degrees throughout the country, breaking the daily record for October.
It continues until noon tomorrow... Cold air inflow from the north after precipitation
(Seoul = Yonhap News) Reporter Jaeyoung Lee = Rain starting in Jeju and Jeollanam-do on the 12th will spread throughout the country at night and continue until daytime on the 13th. When it rains starting at night, there will be gusty winds and thunder and lightning.
The expected precipitation until the 13th is 20 to 70 mm in the Jeju mountainous region and southern mid-mountainous region, 5 to 50 mm in Gwangju and Jeonnam, 5 to 40 mm in the metropolitan area, Gangwon, Busan, Ulsan, Gyeongnam, and Jeju (excluding the mountainous and southern mid-mountainous regions), and 5 to 30 mm in the five West Sea provinces, Chungcheong, Jeonbuk, Daegu, Gyeongbuk, Ulleungdo, and Dokdo.
After the rain, cold air is expected to move south from the northwest, dissipating the premature heat and lowering temperatures.
Accordingly, temperatures will remain at a higher level than usual at this time until the morning of the 13th.
The previous day, the daytime temperature rose above 30 degrees in many places, breaking the record for the highest daily temperature in October in many areas. The temperature in Chuncheon, Gangwon-do rose to 28.8 degrees, the highest temperature in October since observation, and in Daejeon and Seoul, temperatures soared to 30.2 degrees and 29.6 degrees, respectively, making them the second and third highest temperatures ever in October.
Looking at the temperature in major cities at 8 a.m. on this day, it had already risen to around 20 degrees: Daejeon 22.4 degrees, Busan 22.1 degrees, Daegu 21.4 degrees, Gwangju 21.2 degrees, Incheon 21.1 degrees, Seoul 20.7 degrees, and Ulsan 20.2 degrees.
The highest temperature during the day is expected to be 22 to 29 degrees. In a normal year (average from 1991 to 2020), the highest temperature during the day is usually around 20 to 24 degrees.
On the 13th, the lowest morning temperature will be 15 to 21 degrees and the highest daytime temperature will be 19 to 25 degrees, and on the 14th, it will be 5 to 15 degrees and 17 to 22 degrees. Temperatures will drop sharply from noon on the 13th, so be prepared.
AI outlook — possibilities, not facts
Temperatures are expected to drop sharply from noon on the 13th.
Very likely · Within days
![[Tomorrow’s weather] Rain all over the country… After it stops, it gets chilly by 5 to 10 degrees.](/api/img?u=https%3A%2F%2Fimg.yna.co.kr%2Fphoto%2Fyna%2FYH%2F2026%2F10%2F06%2FPYH2026100608910001300_P2.jpg&w=320&q=72&f=webp)
On Tuesday the 13th, it will be mostly cloudy across the country and rain will fall in most areas. Precipitation is expected to be 5 to 40 mm in Seoul, Incheon and Gyeonggi Province, and 20 to 70 mm in the mountains of Jeju Island and the southern midlands. After the rain stops, the temperature will drop, and the morning temperature is expected to drop sharply by 5 to 10 degrees from the day after tomorrow.

On the 12th, Jeonbuk was forecast to be cloudy at times and rain starting at night. The lowest temperature is 20 degrees in Jeonju, and the highest temperature during the day is expected to be 27 to 29 degrees, which is higher than average. From late night to the 13th, 5 to 30 mm of rain was forecast, and showers were also forecast in some parts of the northeast.

On the 12th, Jeju is cloudy and rainy occasionally, and the rain is expected to continue until the morning of the 13th. The expected precipitation is 20 to 70 mm in mountainous and southern mid-mountainous areas and 5 to 40 mm in other areas, and the highest daytime temperature will be 25 to 26 degrees, which is higher than normal. Fine dust will be at a 'good' level, and sea waves are expected to be 0.5 to 1.5 m.

On Monday the 12th, there will be a lot of clouds in Daejeon, Sejong, and South Chungcheong regions, and 5 to 10 mm of showers are expected to fall starting in the afternoon, mainly in Daejeon and the eastern part of South Chungcheong Province. Rain is expected to begin in most areas of South Chungcheong Province late at night and stop during the day on the 13th, with the expected rainfall amount being 5 to 30 mm. After the rain stops, cold air from the northwest will move south, lowering temperatures and making it chilly.

On Monday the 12th, the entire country will be cloudy, and showers are expected to fall in the eastern part of Gyeonggi Province, the inland and mountainous areas of Gangwon, the Chungcheong region, the northeastern Jeonbuk region, and the inland and northeastern mountainous regions of central and northern Gyeongbuk from the afternoon. The expected precipitation is 5 to 10 mm. Precipitation of 20 to 70 mm is expected in the mountainous areas of Jeju Island and the southern mid-mountainous area.
![[Weather] Cloudy nationwide and showers in the metropolitan area… Rain in Jeju and Jeollanam-do](/api/img?u=https%3A%2F%2Fimg.yna.co.kr%2Fphoto%2Fyna%2FYH%2F2026%2F10%2F09%2FPYH2026100903260001300_P2.jpg&w=320&q=72&f=webp)
On Monday the 12th, the entire country will be cloudy, with showers expected to fall in the central region, including the metropolitan area, and inland Gangwon, while rain is forecast in Jeju Island and the Jeonnam region. The lowest morning temperature is expected to be 13 to 20 degrees, and the highest daytime temperature is expected to be 22 to 29 degrees.