Is this a suspected bug with the latest app update, or did the update merely change a Watch setting?
I haven’t yet applied the last two app updates (I’m still on v2.50.5.449 of the Android app), and I’m asking because I noticed recently that my weather information wasn’t being updated (which I usually notice when swiping up from the bottom of the Watch’s home screen; I don’t often navigate to the Watch’s Weather app). Prior to that, I’d connected the Watch to a different phone while going through some troubleshooting steps suggested by Wyze Support (going through their hoops because there’s an apparent bug causing duplicate camera notifications), and I found that when I reconnected the Watch to my main phone all of my previous notification selections for the Watch had been turned off. Since I want the weather for a single location, I’ve always designated that location in the Watch’s settings and have had “Set Location Automatically” turned off. Re-pairing the watch to the Wyze app on that phone deleted my static location and turned the “Set Location Automatically” on, but my phone’s Android Location setting was off (by choice), so the Wyze Watch’s weather lookup was failing.
If the weather data isn’t making it into your Watch, then maybe verifying/changing your phone’s settings (i.e., turning on Location if you want a roaming weather update), Wyze app permissions (I assume it’s going to need Android’s Location permission depending on which app/device features you want to use), and settings within the Wyze app for the Watch will resolve the issue. If not, then maybe you’ve discovered a new bug! 
In any case, welcome to the Forum, @deanarue!