Save for a rainy day
未雨绸缪
例句:We save money for a rainy day。

It never rains but it pours
不雨则以,一雨惊人
例句:I just got sacked and my wife left me!So it never rains but it pours!

right as rain
身体健康,一切正常
例句:I was sick,but now I feel as right as rain。

和云有关的谚语:

on cloud nine
飘飘然如上九重天
例句:She passed the auditon and now she is on cloud nine。

head in the cloud
不切实际,好高骛远
例句:You can't always have your head in the cloud,you need to be down-to-earth。

和彩虹有关的谚语:

chase rainbows
做白日梦
例句:Chsing rainbows won't get you anywhere。

和风有关的谚语:

sail close to the wind
冒险
例句:If you believe what he said, you are sailing close to the wind。

know which way the wind blows
了解情况
例句:He never tells his thoughts until he knows which way the wind blows。

Red sky at night,sailor’sdelight.Red sky in the morning,sailor take waring.
早霞不出门,晚霞行千里。

Halo around the sun or moon ,rain or snowsoon.
日晕三更雨,月晕午时风。

When the stars begin to huddle ,the earth will soon become a puddle.
月明星稀。

When ladybugs swarm,expect a day that’s warm.
蚂蚁搬家,天将雨。

If bees stay at home,rain will soon they fiy away ,fine will be the day.
蜜蜂迟归,雨来风吹。