My car read 100F this summer multiple times, but I honestly doubt it was spot on.
When I saw -33 degrees, I thought it had to be wrong because I am in Pennsylvania, not Williston, ND or Barrow, AK. I went over to the kitchen window and pulled back the analog spirits type thermomenter so I could read it, and it was nearly off the scale but did agree with the truck’s digital thermometer. I actually had multiple days of sub 30 degree below zero temperatures... on different weeks.