this is a complete solution to replace the stock iOS weather app with yahoo weather
yahoo weather
Posted inHOWTO
HOW TO: Replace The Stock iOS Weather App With Yahoo! Weather [ kind of…]
While there isn’t a trick to do that yet, we might have the workaround you’ve been looking for. It’s not a complete replacement solution but it’s good enough.
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Posted inAPP
Yahoo! Releases New Mail and Weather Apps For iOS [video]
Today Yahoo! has released all new weather and mail apps for iOS and Android.