Try clearing out both the cache and the data on the weather app. Go to Settings/Apps then open the weather app. Go to storage and open that, then click clear on both cache and data. This will reset the app to being as it came with the phone. Then input your settings A needed to show what is relevant for you.
On the beta part, yes they just released beta 5 for UI 7.0 the S25 series is already on the UI 7.0, So the testing for the beta will finish after this beta release and the final release for the earlier models has been officially announced for April 7. Not sure what is meant by firmware as the S25 models are already on the official UI 7.0, so I don't get the S25 firmware being in beta.
