I am supposed to go to a party tonight. But considering how heavily it is raining outside, I think I might stay at home, warm and dry, rather than be drenched by wandering outside. This is when you fully understand the English expression
it is raining cats and dogs or the equivalent French expression
il pleut des cordes, literally
it is raining ropes. It looks to me like it's the ideal evening to be uploading pictures to flickr.