"오후에 구름이 끼기 시작했어요."
Translation:It started getting cloudy in the afternoon.
September 21, 2017
"To get" is also a good translation here. It started to get cloudy is the same as it started getting cloudy.
September 24, 2017
구름이 끼기 literally means to put clouds on. This looks like another idiom to learn.
December 14, 2017