Try this if you updated the pkg (UIKit tools) in cydia and rebooted and the weather app still crashes.
@planetbeing : https://twitter.com/planetbeing/status/299205571507257344
Guide:
1) Install iFile in cydia or use any filesystem manager for your idevice.
2) Navigate to \private\var\mobile\Library\Caches
3) Delete com.apple.mobile.installation.plist
4) iFile may unexpectedly quit but reopen iFile
4) Delete com.apple.LaunchServices-045.csstore
5) Reboot
6) You may notice some app icons on your springboard is gone
7) Wait patiently🙂 and the app icons will gradually reappear.
8) Try opening the weather app.
This fix helped me and I hope it will for you too.🙂
@planetbeing : https://twitter.com/planetbeing/status/299205571507257344
Delete com.apple.mobile.installation.plist, com.apple.LaunchServices-045.csstore and rebooting
Guide:
1) Install iFile in cydia or use any filesystem manager for your idevice.
2) Navigate to \private\var\mobile\Library\Caches
3) Delete com.apple.mobile.installation.plist
4) iFile may unexpectedly quit but reopen iFile
4) Delete com.apple.LaunchServices-045.csstore
5) Reboot
6) You may notice some app icons on your springboard is gone
7) Wait patiently🙂 and the app icons will gradually reappear.
8) Try opening the weather app.
This fix helped me and I hope it will for you too.🙂