I think I Solve the Summer Tempeture Problem in the Green House

It gets hot here in the Sierra Nevada foothills and even with a green house and swamp coolers I have only been able to keep warm to hot weather chameleons. The family only had swamp coolers on the ranch house (new house has AC) and when the temperatures were between 95 to 100 degrees the house would be between 80 to 85 and when the temperatures were between 100 and up the house was 90 to 95 (bring in portable swamp coolers and AC to cope). This was similar situation with the greenhouse.

I installed a misting system in the greenhouse and started using the misting system as a supplement with the swamp cooler to keep the green house cool and has been quite effective this summer. When the temperature is 100 and up I keep the mister on for the day and the green house stays cool between 78 to 82 degrees. When the temperature is between 95 and 100 I set the mister to go off every 10 minutes for a period of time and keeps the green house between 78 to 82 and similar scenario for out side temperature between 85 and 95. This seems to be working and in the future may allow me to work with montane/ cooler weather species.

evaporative cooling

precisely, i am always reading posts or getting emails from people in warm weather areas, who are concerned that the temps are too high to keep jacksons or other montanes in an outdoor enclosure, which of course is a viable concern, however, mistings will always reduce the temp of the enclosure, (unless maybe it has just already been misted) so as long as somebody provides a large shaded area by means of a sun shield on a significant portion of the roof , temps can almost always be brought into a range suitable for keeping jacksons or other montanes , all they really need is a small section where they can sun themselves (and trust me, they will never have a problem finding that area) and the rest of the roof can be shaded. there are other things that can be done as well like provide shade for the enclosure itself (maybe next to a tree or large bush) or using an insulative material for the sunshield on the roof (instead of just a piece of corrugated metal) home depot sells thick foam panels that have reflective foil on one side , a person could use one of those foil side up and that would work better than corrugated metal or plywood , after that if you need lower temps just mist more frequently , greenhouses on the other hand are a different story (steamers), hope to see you on the montane side of the fence soon