adjective

(of the sky or weather) covered with or characterized by clouds.

a very grey, cloudy day

overcast,clouded,clouded over,overclouded,dark,darkened,grey,black,leaden,dull,murky,sombre,dismal,dreary,cheerless,heavy,gloomy,dim,louring,sunless,starless,hazy,misty,foggy,threatening,menacing,promising rain,claggy