Knowledge: A storm above 70mm of rain is considered as threathing for farmland, while anything below 30mm is consider safe for backyard plants.

Conversation:
I really enjoy when it rains outside!  It makes me want to relax and watch a movie or take a nap!
That's interesting! Rain is also responsible for most of our fresh water. Do you find that interesting?
Yeah, I have a little garden at my house and wish for it, but I don't know when I have to worries?

Response: Usaully, anything below 30mm is consider safe for your little garden.