WinWeather does rely on only two servers for its information (you can modify this information but there are not many other servers currently available); therefore, you're dependent on their status for your information. However, the folks at Insanely Great Software (makers of WinWeather) have recently added a dedicated feed for weather information, thereby partly eliminating the need for additional servers.
WinWeather also lacks extensive forecasting information on cities in Canada and other countries outside of the United States. Aside from these minor setbacks, WinWeather is definitely the Real Deal when it comes to the on-demand deliverance of weather reports to your computer.
of $19.95
Pros: Finally, an app that delivers the weather to your computer; one time fee
Cons: Relies on only two servers for information, infomation only for U.S. and Canada