@thepro8, sounds awesome! I want one
Assuming it's powered (or activated) using a 24VAC valve, you could setup an IFTTT recipe to trigger anytime the temperature goes above "x" degrees. Alternatively, if you only want it to go on while you're home or outside, you could use the remote control or another integration to trigger the zone to turn on.
Hope this helps. Maybe someone who has done this can recommend a mister system to use. Found this one on Amazon...you'd just need a 24VAC valve to control the water flow to it.
Hope this helps