We've rewritten iOS 7 LockScreen Forecast from the ground up. As a result, you may notice some subtle changes. This is provided as a free of charge update to previous customers.
Once installed, you may need to follow the below instructions in order for the weather to display. This also applies if you only see the time/date on your LockScreen. 1) Within the iOS Settings, scroll down and select 'Weather Widget'. Under 'Location Update', change this to 'Constant'. 2) Now open the iOS Weather App and let this refresh with the latest information. 3) Respring your device. 4) Again, within the iOS Settings, scroll down and select 'Weather Widget'. Under 'Location Update', change this to 'Semi'. 5) Finally, respring your device. The weather should now be showing.