Got a weird one for y'all...
 

So I had my engine replaced due to flooding a little over a year ago. Ever since then, whenever it's humid my truck ambient temp registeres all crazy. It will say it's 81, then drop to like -20. I've had the sensor replaced and it continues to do the same thing. I think it may be electrical due to some other interesting things like hitting the volvime button on the steering wheel and it changing the station, but I have no idea. Any ideas???

The steering wheel button issue is pretty common when the buttons need to be replaced. Might not be related.

Sounds like a dirty wiring connection somewhere or a chafed wire.

the steering wheel issues is more thank likely the clock spring, its a common issue.