With everyone waiting impatiently for the monsoon, this is a good time to talk about rain and clouds.
Be as right as rain: to feel well.
I shall be as right as rain if I take a vacation.
Come rain or shine: do something no matter what happens.
I make it a point to go to the gym every day, come rain or shine.
Chase rainbows: waste your time trying to get or achieve something impossible.
I am keen to pursue a career in playback singing, but my parents think that I am just chasing rainbows.
Itís raining cats and dogs: itís raining very heavily.
It was raining cats and dogs when I left office and by the time I reached home, I was completely drenched.
Take a rain check: you cannot accept someoneís invitation to do something but you would like to do it another time.
I have to reach home early today, but Iíll take a rain check on the movie we had planned to see.
It never rains but it pours: when something bad happens, many other bad things also happen, making the situation even worse.
As it was, I was late for the exam and then the car broke down. Like they say, it never rains but it pours.
Save (something) for a rainy day: keep some money for a time in the future when it might be needed.
I am cautious with my money and make it a point to save for a rainy day.
On cloud nine: very happy.
Ever since I found out that I have topped in my class, I have been on cloud nine.
A cloud hangs over something/someone: believe something bad about something or someone and not like or trust them because of it.
A cloud still hangs over the chief minister despite his denials that he was guilty of financial wrongdoings.
A cloud on the horizon: a problem or difficulty which you expect in the future.
The economy is doing fine and the only cloud on the horizon is the possibility of a bad monsoon.
Have your head in the clouds: not know what is really happening around you because you are paying too much attention to your own ideas.
Ever since she has got a boyfriend, she has been walking around with her head in the clouds.
International Dictionary of Idioms)