The rain sound is really good! The thunder sounds a little artificial but not too bad.
This is a simple program that lets you listen to rain!
You can do 3 things: select the volume of the rain and thunder, and how often the large thunderclaps are played. Play around with it to get the best combination.
It's not the best rain sound generator, and maybe I'll add more features in the furture. Oh well, I digress. Have fun!