Funny too, I was just browsing through this thread today: https://stackoverflow.com/questions/123378/command-line-unix...
And https://v2.wttr.in/ is decent.
I think you'll find that ASCII-only is very limiting, and a few Unicode symbols like the Braille dots would make a big difference. That's been my experience anyways making ASCII things.
Wagon wheels in particular seem like a very tough ASCII challenge -- I'm looking forward to seeing what you come up with.