For Germany, the DWD weather app [1] is pretty great. I'm usually able to avoid specific rain moments based on their localized cloud mapping. The DWD is a federal agency. [2]
[1] https://www.dwd.de/EN/ourservices/warnwetteapp/warnwetterapp...
https://play.google.com/store/apps/details?id=de.dwd.warnapp