Ive used this website https://www.fnmoc.navy.mil/public/ a bit recently shows you the predicted wind and precipitation for a good few days ahead obviously things can change but it give you a good idea of what is coming towards us. I keep getting a warning about the sites certificate but doesn't seem to have affected my computer .
To use it go into Global Ensemble Weather Prediction Charts (EFS)
This will open a new window where it will give regions of the world for gale and precipitation probability all in a java movie.
i use accuweather,didnt let me down so far,you can see by the any city in ireland and it gives hour by hour report 15 days ahied,once its any changes you faind them on site stright away [url]http://www.accuweather.com/ukie/index.asp[/url]
This is the most accurate site for forecasts and it has loads of sites. But the maximum a forecast is good for is 3 days. Thats as much as the science will predict with any accuracy