My Topeak Smart gauge measures at half pound increments. 80.5 front and 80 rear psi at 50°. Starting temp was about 70° for 25 miles on blacktop. Temp gauge read over 90, but it was more like 85. The tires came in at 82 psi. Not the 5 pound increase, but temperatures did increase. Not worth worrying about.
Good reason to go for a ride on a nice day.