Browsing through the list of iOS apps which are available to download on an M1 Mac, I spotted Weather Gods.
And, what do you know, it works pretty darn well with VoiceOver!
So far I've not discovered any gotchas of note.
It's definitely worth checking out if you have an M1 Mac and have already purchased the Weather Gods app.
It also makes me hopeful for what other accessible iOS apps might transfer well to the Mac.