I feel like the AIs are hitting some theoretical ceiling if the surface was bare and dry. That would make sense given the sun angle equivalent in fall for Oct 5-10 where records are in the mid/upper 80s in the warm spots.
But I think it’s safe to toss those readings. Slash 10°F off of those and you start getting closer to the op runs and highs from that 2/21/2018 record heat day.