I was browsing on DSLReports and came across a thread talking about different weather monitoring apps and saw mention of one called Weather Watcher. I downloaded and installed it and I must say I like it. Its doesn't contain adware like WeatherBug and seems to be pretty light on system resources. It pulls it data from weather.com and will even display updated weather maps on your desktop if you want... http://www.singerscreations.com/