I dont know when 90 degree heat became good, I shoot less when its that hot. I prefer 50-70 deg, no wind and even a bit cloudy.
I cant stand the heat anymore, mowed one day 10 yrs ago for 12hrs in 88 deg heat and got really sick from it broke out in a whole body rash, massive headache etc. Ever since then cant stand the heat, if I start to even get really hot my back starts to break out in a rash again, so Ill take cool weather any day. But have fun shooting.