in the new vibrant visuals there is no cloud or darkness effect when raining and the sky appears as bright and daytime/night. having the sky dark and cloudy especially at night with such a nice looking visual upgrade would make the game way more fun. turning the volumetric fog quality up does do some effects but still no weather effect.
vibrant visuals set to ultra and 24 render distance at native 1440p
This issue is being tracked at MCPE-199262.