Yes

you do need a jacket based on the weather in Pyongyang, North Korea 1 second ago

Why? Because it's pretty chilly.
54°F12°C & Cloudy

Wind is 11 mph17 km/h from the NE, gusting to 19 mph31 km/h
May 6
5pm54°F12°C10 mph17 km/h NECloudy
6pm54°F12°C10 mph15 km/h NECloudy
7pm55°F13°C9 mph15 km/h NECloudy
8pm56°F14°C9 mph14 km/h NECloudy
9pm59°F15°C10 mph15 km/h NECloudy
10pm60°F16°C10 mph16 km/h NECloudy
11pm62°F17°C10 mph16 km/h NECloudy
May 7
12am63°F17°C9 mph15 km/h NECloudy
1am64°F18°C8 mph13 km/h NECloudy
2am64°F18°C7 mph11 km/h NECloudy
3am63°F17°C4 mph7 km/h NECloudy
4am63°F17°C5 mph7 km/h NECloudy
DateLowHighWindDayNight
May 654°F12°C64°F18°C8 mph12 km/h from NECloudyMostly Cloudy
May 751°F11°C68°F20°C5 mph8 km/h from WPartly CloudyClear
May 847°F9°C73°F23°C9 mph14 km/h from SWMostly ClearMostly Clear
May 953°F11°C74°F23°C14 mph22 km/h from SPartly CloudyRain
May 1054°F12°C65°F18°C11 mph17 km/h from SWRainPartly Cloudy
May 1150°F10°C71°F22°C8 mph13 km/h from WClearClear
May 1249°F10°C72°F22°C8 mph13 km/h from NClearMostly Clear

Yes

Low of 51°F11°C, High of 68°F20°C
Wind: 5 mph8 km/h
Precipitation: None

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