(adsbygoogle = window.adsbygoogle || []).push({}); A patch to fix the Weather.app bug caused by the 6.1 jailbreak (evasi0n) has been pushed out in the form of an update to UIKit. It should pop up under your "Changes" tab in Cydia as an update.

Please note that an additional cause has also been identified in AppSync, so if you're having issues with Weather.app after updating UIKit, remove AppSync and retry the app.