2009 Jeep Grand Cherokee Inaccurate Outside Temp Reading

Hello. Honestly not sure what engine liter size I have but regardless :(.
Just got my car back from shop, rear brake job. When
I took it in, everything else on car was fine. But now. The
compass reads correctly but the outside temp is incorrect.
I saw another posting regarding same issue and you suggested
first checking to see if sensor for outside temp was unplugged.
Where do I find this sensor? Perhaps unplugged or bumped
by mechanic when brakes repaired. He did check front and
back. Thank you for you assistance.