"草上露珠闪，告别下雨天when dew is on the grass,rain will never come to pass.
大鱼吃小鱼，天空要下鱼fish bite best before a rain.
蚂蚁搬家，天将雨——when ladybugs swarm,expect a day that’s warm.
蜜蜂迟归，雨来风吹——if bees stay at home,rain will soon come.if they fiy away ,fine will be the day
飘飘然如上九重天on cloud nine
日晕三更雨，月晕午时风——halo around the sun or moon ,rain or snowsoon. "
太阳月亮镶银边，老天马上要下雨when a halo rings around the moon or sun, rain is approaching on the run.
"晚上天色红，水手乐呵呵;早晨天色红，水手急煞煞。red sky at night, sailor’s delight.red sky in the morning, sailor’s warning.
未雨绸缪save for a rainy day
月明星稀——when the stars begin to huddle ,the earth will soon become a puddle.
"早晨天上积雨云， 晚上地下降暴雨mountains in the morning. fountains in the evening.
早霞不出门，晚霞行千里——red sky at night,sailor’sdelight.red sky in the morning,sailor take waring.
不要因为早晨下了一场雨就不去旅行。 for a morning rain leave not your trip.