予想〈する〉
expectation, prediction
予報〈する〉
forecast
天気予報
weather forecast
湿度
level of humidity
湿気
humidity, moisture
湿る
to be wet, to be moist
くもる
to be cloudy
くもり
cloudiness
嵐
storm
強風
strong wind
大雨
heavy rain
小雨
light rain
折りたたみ傘
folding umbrella
(傘を)さす
to open (an umbrella)
にわか雨
rain shower
にわかに
means that something happened so suddenly that it could not be predicted
突然
suddenly
とたん【に】
as soon as, in the moment that
ぬれる
to be soaked
ぬらす
to soak
あっという間
in the blink of an eye
止む
to stop
ところどころ
here and there
積もる
to pile up, to accumulate