I have my thermostat set to show the outside temperature when I walk in
the room. For the last couple of days it has been displaying a
temperature which is around 15° higher than the actual outside
temperature.
I checked the ZIP Code in my app on the phone and it is correct. One
thing I just noticed is that in the Nest app on my phone the outside
temperature listed is correct but the outside temperature on the
thermostat is around 15° higher.