A little bit ago, Kodi 21.0 hit the Google Play Store, so if your device hasn’t automatically updated it, head to the play store and do it.  If you are using a build like XENON, or similar that has a weather banner powered by Multi Weather, it has been marked as broken in the Kodi Repository. This is due to Yahoo suckiness and not sharing their weather. So, you probably noticed that your weather banner no longer is showing.

Easy to fix, just go to kodi settings, under services and change the weather service to Gismeteo.  After you do that, you will need to configure the city location that you wish to display.