Fiesta Fiasco is a 1967 Warner Bros.-Seven Arts Looney Tunes cartoon directed by Alex Lovy.
[1] The short was released on December 9, 1967, and stars Daffy Duck and Speedy Gonzales.
He is struck by lightning, is caught up in a tornado and is constantly rained upon (it's possible the raincloud had a will of its own and didn't want Daffy to ruin the preparations).
After suffering much torture from the raincloud, Daffy attempts to suck the cloud into a vacuum cleaner and release it over the mice's party.
As the raincloud reappears and begins raining over him, Daffy bursts into tears of happiness, touched by the mice's gesture.