Tuning and temp/humidity

Fedex just brought me my Vortech S trim yesterday. I am super anxious and cant wait to have it installed and tuned.

But i was wondering, its 103 degrees and 75% humidity and its supposed to be like this as far as they can see. Its just too damn hot. Is it bad to get it tuned while its this hot out? Should i wait to install and tune until its a little cooler out or does it not make that big of a difference?