I helped set up a weather station for my workplace. We got it from the same shop as above. Its this model:
shop.davisnet.com.au/index.php?main_page=product_info&cPath=1&products_id=5&zenid=1beded824025cffa0539b25fa7eec6acIt has worked well for the year and a half we've had it and the web interface of Weather Display Live is excellent. This system may be a bit more elaborate and pricey. It looks like they have cheaper systems that are what you are looking for.
There is a thread in the NSW windsurf forum about a weather station in Gerroa. Its a different system so have a look there too.
