SAE corrects to 60*F, 29.92 Hg, 0% humidity. That's why many usually get that SAE so numbers can be compared and corrects all rwhp to the same atmospheric conditions. The most important factors are the first two as far as affecting rwhp/acceleration with humidity a distant 3rd. Given that, if you can run in a lower temp and higher atmospheric pressure...power will increase and a better ET and mph is possible.
Density Altitude factors in all these atmospheric conditions and can be used to correct all timeslips to Sea Level, 29.92 Hg, 0% humidity.
This is without checking, but I think my memory is correct on the numbers.