I am having the same issue as you Larry. However, my issue has been persistent for about 1 or 2 weeks. I was hoping the update I received today would fix it, but no go.
Today I installed Dock Runner and reset my weather to geographical location (used to be manually set to my zip). It found my latitude and longitude but still could not provide me with any weather updates. When I tried to manually set the location again, it could not find my zip code (or any that I typed in)! Then I tried county, city, and state ... nothing.
For everyone else experiencing this problem -- are you having issues manually setting your location as well?
I was leaning toward the possibility that maybe the interface to Accuweather changed and the app needs to be updated. The only other thing that I can think of is that I installed the Weather.com app and recently uninstalled it. I believe the two coexisted fine for some time though, so I'm hesitant to blame that app as the source of the problem. On the other hand, if the interface to Accuweather changed, why are we the only ones that mentioned experiencing this problem?