All of our weather data is provided by Weather Underground (if you provided an API key) or Yahoo weather otherwise. Therefore, if the data is incorrect on their end, it will also show up incorrectly in the app. So answering your question, this is not a bug however I would try to find a more accurate weather station nearby if you are using Weather Underground. To do so, you may use the button next to the location input box that has the marker icon. This will show a map overlay with all weather stations in your area.