I remember a member on here who lived in Phoenix, AZ, he wouldn't race his car from early to mid May to late September do to the heat and humidity there, he was smarter than me
BTW, LACR was in the high desert at 2500 Ft altitude is what I remember, it was in the south west corner of the Antelope Valley near Pear Blossom on the north side of the foot hills of the San Gabriel mountains.