Could we also say 「そらがくもりです。」
Just going off of what Iearned prior
Yes we can
Why does this mean the sky is being cloudy, as opposed to clouding over?
Can we say 空はくもりです
also you can say like that. We usually say 今はくもりです or 天気はくもりです . whichever is fine. i think 天気 is also usual.
"今/今日は 空がくもって(い)る" "今/今日の 天気はくもり" "今はくもりです"