WeatherCat version 3.2.0 is now available (April '23) - see the Releases forum for more details.
Just stumbled across this s/w after having used WeatherDisplay for 10 years on a PC which went pop a few months ago. Now I've found this, I can link my Davis VP2 and get the website up and running again on my 2014 Mac Mini. Let's just say that in my 3 days of trial (going to buy later), it's proven to be a joy to use and stable after fighting with the Mac version of WD.