曇りです。
Kumori desu
It is cloudy.
Simple noun form
今日は曇っていますね。
Kyō wa kumotte imasu ne
Today is cloudy, isn't it.
Natural conversational form
どんよりした空で気が滅入りますね。
Donyori shita sora de ki ga meiri masu ne
The gloomy sky makes my spirits sink, doesn't it.
どんより = heavy/gloomy; 気が滅入る = spirits sink, very expressive
More Japanese Weather Phrases