Here are some examples of English idioms that use the weather.
As right as rain 健康(特别是在病好将来)
This means to be healthy, especially after being ill.
Example: I have been off work for week, but Im right as rain now.
Be a breeze 很容易的事情
If something is a breeze, it is very easy to do.
Example: My English test was a breeze. I answered all the questions in less than 10 minutes.
Be snowed under 有不少事情要做,忙得不可开交
To be snowed under means to have too much to do.
Example: Im snowed under at the moment because I have three reports to write and four tests to study for.