So I started my first playthrough with Dolomite Weathers and Forest Borealis - here's a crap video I made, but it showcases the weather diversity fairly well : r/skyrimmods
Dolomite - TrueStorms Merged Compatibility SSE at Skyrim Special Edition Nexus - Mods and Community
TES V - Skyrim Mods: True Storms - Thunder and Rain Redone - YouTube