Hey Erik,
I just wanted to say thanks for your awesome icons. I used them on a Saturday project I did awhile ago (http://weather.basementserver.org/) and they looked great!
Awesome idea. The next step would be allowing choice of departure time and arrival time and showing weather loosely based on that. The prediction might be less reliable but then at least I could put in that I was leaving for somewhere at 7pm and see the nighttime temp plus rain/snow/etc.
Thanks for the feedback! That was actually one of the features I wanted to add, but I never got around to implementing it. I was planning on using the time estimates from Google's directions (in addition to the departure time), but parsing and correlating that information proved a little tricky and I ran out of time. A visible temperature indicator is also a nice touch. Maybe I'll get a chance to add that soon.