My Little Cloud a thunder and rain relaxation app for Windows PC.

A small 3D cloud appears on your desktop screen.
Select one of several rain and thunder combinations, (Light Rain, Heavy Rain, Thunder, Thunder and Rain, Heavy Thunder and Rain).
A random rain loop will be played (one of 17 tracks).
A random thunder track will be played (one of 20 tracks).

Everything is customizable, you can pick the type of rain that is played.

All tracks are high quality uncompressed wav files recorded by nature recording genius Gordon Hempton, find out more about Gordon here:

The application also has the following features:

• A track selector that allows you to pick the type of rain playing for the mode.
  
• An online radio, so you can play lofi, classical, or other relaxing music channels to further set the atmosphere.
  
• A screen dimmer that can dim one, all, or none of your screens when the app launches.
  
• A volume mixer that allows you to set rain, thunder and radio loudness independently.
  
• An FPS cap to reduce performance usage.

If you love thunder and rain, then this app is a must have.