Saving for a rainy day
To be snowed under
To be under the weather
To have a face like thunder
Raining cats and dogs
Every cloud has a silver lining
To take a rain check
A storm in a teacup
To have too much to do
A lot of trouble over a small thing
Nothing is ever all bad
Not feeling very well.
Not spending all your money in case you need it in time of trouble.
I can't accept your invitation this time, let's try again later.
To look very angry or upset
A very bad rainstorm
