CoolWeather brings current weather conditions to your taskbar tray. It displays a little condition indicator (like a sun or cloud or raindrop) along with the current temperature right in the taskbar tray. If you click on the icons it brings up a menu with current conditions and a sub-menu even displays an extended forecast. The free trial version allows you so see how it works for Kalamazoo and the full version (for only $12) allows you to change to any zip code supported by the www.Weather.com web site. Just like everything that CoolTick.com makes, it's super easy to use and is written in C++ to be efficient and stable.
More info:
hxxp://www.cooltick.com/weather/