I'm not sure what I did, but my always on display is not showing the temperature but instead a cloud symbol for the weather. The same thing is happening with the status bar, I am using the default weather app installed on my Galaxy S9 Plus.
Part of the One UI visual update means there's less text on the Always On Display, as well as throughout the OS. I don't believe there's currently a way to override this, but I'll bring it up with the devs as a feature request 😊
