The Aviation Digital Data Service (ADDS)

Check the graphical Winds/Temps aloft to find out if it's going to be blowing in on launch tomorrow!

Air Sports Net's Winds and Temperatures Aloft page

Easy-to-use winds aloft forecasts to help you pick the right flying site for the day.

WeatherImages.org Jet Stream page

Shows where the big winds aloft are predicted be for the next 12 days.