Save for a rainy day
未雨綢繆
例句：We save money for a rainy day。

It never rains but it pours
不雨則以，一雨驚人
例句：I just got sacked and my wife left me！So it never rains but it pours！

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

和云有關(guān)的諺語：

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

head in the cloud
不切實(shí)際，好高騖遠(yuǎn)
例句：You can't always have your head in the cloud，you need to be down-to-earth。

和彩虹有關(guān)的諺語：

chase rainbows
做白日夢(mèng)
例句：Chsing rainbows won't get you anywhere。

和風(fēng)有關(guān)的諺語：

sail close to the wind
冒險(xiǎn)
例句：If you believe what he said， you are sailing close to the wind。

know which way the wind blows
了解情況
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.
早霞不出門，晚霞行千里。

Halo around the sun or moon ,rain or snowsoon.
日暈三更雨，月暈午時(shí)風(fēng)。

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.
螞蟻搬家，天將雨。

If bees stay at home,rain will soon they fiy away ,fine will be the day．
蜜蜂遲歸，雨來風(fēng)吹。
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