it's raining pitchforks (and hammer handles)
old-fashioned It's raining extremely heavily. We can't hold the company barbeque today—it's raining pitchforks and hammer handles! We'll still have a good vacation, even if it's raining pitchforks the whole time.
It's raining pitchforks (and hammer handles).
and It's raining cats and dogs.Rur. It is raining very hard. Take an umbrella. It's raining pitchforks and hammer handles out there! Charlie: Have you looked outside? How's the weather? Mary: It's raining cats and dogs.