Yes

you do need a jacket based on the weather in Yongin-si, Gyeonggi-do, South Korea 1 second ago

Why? Because sorry, it's too cool for just a hoodie!
53°F12°C & Partly Cloudy

Wind is 2 mph3 km/h from the Northwest, gusting to 4 mph7 km/h
April 19
1pm53°F11°C2 mph3 km/h NorthwestMostly Cloudy
2pm52°F11°C3 mph4 km/h NorthwestMostly Cloudy
3pm52°F11°C3 mph4 km/h NorthMostly Cloudy
4pm51°F11°C2 mph3 km/h NorthPartly Cloudy
5pm51°F10°C2 mph4 km/h NorthPartly Cloudy
6pm52°F11°C3 mph4 km/h NorthPartly Cloudy
7pm54°F12°C3 mph5 km/h NorthPartly Cloudy
8pm56°F14°C3 mph5 km/h NorthPartly Cloudy
9pm60°F16°C3 mph5 km/h NortheastPartly Cloudy
10pm64°F18°C3 mph4 km/h NortheastMostly Clear
11pm67°F19°C3 mph4 km/h NortheastMostly Clear
April 20
12am70°F21°C2 mph3 km/h NorthClear
DateLowHighWindDayNight
April 1951°F10°C73°F23°C3 mph5 km/h from NorthMostly ClearMostly Clear
April 2053°F12°C77°F25°C6 mph9 km/h from SouthClearPartly Cloudy
April 2156°F14°C62°F17°C6 mph9 km/h from EastRainRain
April 2253°F12°C71°F22°C6 mph9 km/h from NorthwestPartly CloudyPartly Cloudy
April 2347°F8°C65°F18°C11 mph17 km/h from WestClearMostly Clear
April 2443°F6°C63°F17°C11 mph18 km/h from WestClearClear
April 2545°F7°C70°F21°C8 mph14 km/h from WestMostly ClearPartly Cloudy

Yes

Low of 53°F12°C, High of 77°F25°C
Wind: 6 mph9 km/h
Precipitation: None

Support This Page