here is a rainy parcel: it is in the sky not sure it will be what yo are looking for Second Life Maps | Cerveza Island

and this one but it is adult: Second Life Maps | Barks

well i mean the sim is rated adult, nothing here that appears adult at the moment

and this one.. Second Life Maps | Our Dreams just city streets with rain in places

you are the most amazing human being ever i love you

Second Life Maps | Cupcake is my go-to rainy sim (though it only rains in one section)