흐려요.
Heu-ryeo-yo
It's overcast.
Single adjective
오늘은 흐리고 우중충해요.
O-neu-reun heu-ri-go u-jung-chung-hae-yo
Today is overcast and gloomy.
우중충하다 = gloomy/dull, very natural
하늘이 꽉 막혀서 답답하네요.
Ha-neu-ri kkwak ma-kyeo-seo dap-dap-ha-ne-yo
The sky is completely blocked and feels suffocating.
답답하다 = frustrated/stuffy feeling, used for weather and emotions
More Korean Weather Phrases