Don't pass up looking at VAF weather page, accessible from the upper left corner of the home page. It's very complete and I use it most often.
http://www.vansairforce.net/weather.htm
Additionally, I use RadarScope on my iPhone (I don't know if it's available for others)
I have this app which works well however I cannot figure out if you can set favorite sites (such as Oshkosh), I just seem to get random towns in the top window and cannot swipe left or right and the help file is non existent.
Figs