Precipitation — water that falls from the atmosphere such as rain or snow; used in weather reports and meteorology.
今日の降水確率は30%です。
The chance of precipitation today is 30%.
山間部では午後に降水が予想される。
Precipitation is expected in the mountainous areas this afternoon.
気象庁は明日の降水量を発表した。
The Meteorological Agency announced tomorrow's expected precipitation amounts.