I thought I knew all the sites for weather but a friend just sent me this link. I may be the last to know about it but it is great for cross country trip planning - and even local. Especially the mountain top weather stations in Colorado and the Rockies.
weathercams.faa.gov
FAA WeatherCams
FAA aviation weather camera imagery, aviation and weather data, flight planning and weather monitoring tools, and other resources for pilots, forecasters, ...
weathercams.faa.gov
