have problem as well with this app on my iPhone 5.
Its still working for me, on iOS 6.1. Have you upgraded?
have problem as well with this app on my iPhone 5.
I found the answers:
Go Privacy - Location Services
go to the list and the find the "Weather" and turn it on.
Tada!!!!
Problem is still not fixed after 5! years, ios 10.3.3 iPhone SE
On wifi iphone weather app will update fine but when i search for cities or try to update the weather on 3g with iphone 4s says update failed or no results found driving me crazy