Keith,
I run 120 PSI cold in my tires, the maximum cold inflation. I have commonly seen summer time hot tire pressures in excess of 140 PSI on my tire pressure monitoring system. This is a normal condition that you should not be concerned about. The tire pressure charts take the gain in tire pressure from road heat into consideration, and these factors are engineered into the tire construction.
The problem that you need to be concerned about is underinflation/overloading. Therefore, you should never deflate your tires to compensate for road heat, because this will lead to underinflation/overloading related tire failures.
Gerald