Mine hasn't been working for hours. I never understood why Apple just doesnt partner w/ weather.com? Makes sense to me (isn't that what the weather widget on Macs use?)
Try going to weather.com with Safari on the iPhone.
It is the absolute worst experience. I think it may be that the website is either poorly designed for rendering or that it uses a lot of Flash that the iPhone can't handle. I don't know, but it is horrendously slow.
I was at the bar the other day and my friend asked what the weather was going to be. Since the weather app has such limited information, I fired up Safari and pointed to weather.com......
I was able to give him the results
10 MINUTES LATER. Also, I was only able to show an hour by hour prediction, as the Doppler Radar on that site uses Flash. I was embarrassed when he kept asking me what the weather was going to be over the course of ten minutes and I eventually had to tell him, "Uhh, the iPhone doesn't have Flash so I can't show you the Doppler, but here's an hour by hour detail instead". He just looked at me. All of this was on WiFi by the way.
If you want a great link to weather for the iPhone with the Doppler Radar, then check out:
iweathr.com
