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。

when a halo rings around the moon or sun, rain is approaching on the run.
太阳月亮镶银边,老天马上要下雨

red sky at night, sailor’s sky in the morning, sailor’s warning. 

"晚上天色红,水手乐呵呵;早晨天色红,水手急煞煞。

save for a rainy day

未雨绸缪

when the stars begin to huddle ,the earth will soon become a puddle.

月明星稀

mountains in the morning. fountains in the evening. 

"早晨天上积雨云, 晚上地下降暴雨

red sky at night,sailor’s sky in the morning,sailor take waring.

早霞不出门,晚霞行千里