Never even heard of it before now. :) But a bit of research turns up that there is a Mac OS X version of the WeatherLink application. If it produces output in any standard format it shouldn't be too painful to write a PHP script to parse that data and spit out a webpage.

I've toyed with the idea of getting a weather station but never have. I bet it will be fun.

If you go to the Weather Underground site (wunderground.com) and enter your home town, you'll see at the bottom of the page a list of personal stations that are in operation near you. If you poke around in this list you'll see that it gives the hardware/software that each station is running. That might be a route to find a neighbor who has the same set up as you.

I have the same station though I'm on Windows. Purchasing additional software is the key; the Davis app sucks.

I've used a lot of different ones, but I've settled on Weather Display for now. It's cumbersome, but does more than any I've tried, and they have a great forum. I don't think they have a Mac vers, but they do have Linux. Shop trial versions to find one that suits your site. However, most are not very intuitive so it can be time-consuming to test.

I'd highly recommend dedicating an old beater computer for weather downloading and uploading as I've yet to find a super-stable weather app.