A Day in the Rain
Featuring some mods that make your wet weather experience that much better.
Wet and Cold
Storm lightning
Wonders of Weather
And RainWetSurfaces from Rudy ENB
Seeing the splashes under your feet, drips from your clothing, wet shine
on leaves/ stones along with small ground splashes, and lightning in
the sky really add to the immersion of rainy weather.
The sound of soggy feet, NPCs using wet weather gear, and rainbows
after storms are just icing on the cake.
These are mods that add a lot to the game especially when combined.
I can't imagine playing without them.