Consistently wrong on temps for my hometown

I have been using this app for over a year and for that period of time the daily highs listed for my hometown, a small town in the mountains of Virginia, have exceeded the actual on the ground temperatures by an average of 8%. When I delete the app and reload it, it then updates and reflects a more accurate temperature but soon (within hours) returns to its “inflated” daily highs. I am not sure if it is because of a faulty source for the recorded temperatures or a “global warming” adjustment conjured by the computer models used.

BroRat68 about Clear Day® - Weather HD