Beside [name_u]Rain[/name_u]/[name_f]Raina[/name_f] or [name_u]Cloud[/name_u], obviously. I’ve seen names like [name_f]Soleil[/name_f], [name_f]Stella[/name_f], [name_f]Snow[/name_f], [name_f]Moon[/name_f], [name_f]Iris[/name_f], [name_f]Aurora[/name_f], etc a lot here, but rarely names that bring cloudy and rainy imagery. And I love rainy days and looking at the clouds in general, so I try to think of something.
[name_f]Marie[/name_f], [name_f]Ingrid[/name_f], [name_f]Claire[/name_f], and [name_u]Vesper[/name_u] came to mind for me. Not sure if that helps any lol.
[name_f]Morgana[/name_f] and [name_f]Sybella[/name_f]/[name_f]Sybilla[/name_f] feel like stormy names to me. Off the top of my head, there’s also Megha, an [name_f]Indian[/name_f] name that means “rain cloud.”