+1 for the cargo shorts. I live in GA and have lived in NM and western TX, and from TN. I know about heat and humidity. I personally find cargo shorts to be comfortable when running around town doing errands in the middle of summer heat.
When you think about it, how much are you really victim to the actual outside? For me "running around" means driving from this place to that place than getting out of the car and going in the air conditioned building than back to the car for another short trip. By the time I get to my next stop the car has cooled off and cooled me down a little (recharge if you will) Ohh btw I use a Kholster for CC and a Black hawk serpa for OC it just depends on which gun I carry SW99 or XD40. Dont get me wrong I have worked in the summer heat and humidity in TN in cargo shorts and a Tshirt with my Kholster on and actually sweated through the leather and soaked my gun but after a cleaning on both items you wouldnt know it today.
I am now looking for a way to carry while I "try" and run out doors. Any suggestions would be appreciated i do have the wifes Jframe 38 spl +p available for carry when I want to run. I figured these suggestions would work towards the OP clothing attire also.
"The purpose of war is not to die for your country. The purpose of war is to ensure that the other guy dies for his country." - General Patton