If you mean WeatherLink (which comes with the hardware logger), then Yes, it does a fine job of logging conditions, creating NOAA-style climate reports, and allowing upload of conditions to CWOP, WeatherUnderground, and your own weather website.
Others have found that it takes more than one weather program to produce the results you may want. For example, near-realtime weather conditions reporting is available with either Weather-Display or Virtual Weather Station.
A comparison of the software available and features/pros-cons is available here on the
Software Reviews section. For a start, WeatherLink is a good base. To run multiple station software from the Davis Vantag Pro2 console, I highly recommend using
VirtualVP (which allows up to 4 weather programs to interface with the console). I use it (along with
StartWatch) to run WeatherLink, Weather-Display and VWS all at the same time from my VP1+ console.
Best regards,
Ken