Hi Bogget,
WXSIM is a purchased software from www.wxsim.com that allows you to run your own forecasts based on meteo data. Many of us have found it useful for our websites, and I do have a formatting script that processes the text output of the WXSIM program to create reports like the WU and NWS forecasts.
WXSIM will work anywhere in the world, but you have to buy a license for it and have it customized for your locale by the author Tom Ehrensberger.
See the WXSIM forum here for posts about using WXSIM.
I personally think that Tom has done an outstanding job creating a weather modeling program that runs on a PC with output that closely matches what the ‘big guys’ with their supercomputer models can produce. 
8) =D>
Best regards,
Ken