weather forecast in xml

Hi all!
I haven't been posting here for a looong time - so if I put this question in the wrong forum please do not blame me and just move it to the right forum:)
And now the question - I've been using on our bike sites weather forecast provided by http://weather.interceptvector.com. But at present time it looks like it's out of order. Does anyone knows any other service providing weather forecast in xml format? Btw I need forecast for Prague (yes that beautiful old city in Europe;)). Anyone knows about something? Thanx in advance.

You can get a "sticker" from http://www.wunderground.com it should could convert to xml if it isn't already