There are a few ways to get weather information on your PDA, but none that show the local radar. Here's a trick I use:

For local weather:
http://www.wx.com/partnership/sticker.cfm?zip=77002

For local radar:
http://www4.wx.com/partnership/miniradar_servlet.cfm?zip=77002&size=0

In both of these addresses, replace 77002 with your U.S. ZIP code.
They deliver a single graphic image that looks fine on my Palm IIIXE, and probably much better on a color device.

looks good!