Raining Elephants & Hippos for past 3 days..

It's been raining continuously since Sunday. Fantastic! Wonder where did all those water came from! Yesterday's was really the heaviest! Floods all over.. They said it's the monsoon season. Dunno true or not.. Haven't heard of this word for so long.. Is this really really the monsoon season? Thought the "weather" has all shifted over the past years.. Haha..