I feel your pain as a Southern California grower. They start to look unhappy at 90 degrees but if you move em to the shade the hottest part of the day they won't bitch as much, even up to about 110. I grow in containers just so I can move them around... if I want to flip a plant in June I can just park it in the shed for extra darkness. If you're in the ground you can't move around but you can exert some control. A 50% shade cloth will help on those hot days. Put the shade cloth low enough to the tops of your plants and it'll also help keep the moths from laying eggs (ie bud worms).
If there's rain and your plants are flowering, you can throw a tarp over them... but learn from my fail, make sure no water pools on the tarp.
Outdoors, the real Public Enemy #1 is the bugs and critters. That can be managed too, the trick is to know from day 1 you are fighting a war, it's you vs the bugs and their most powerful weapon is stealth.
Edit: And numbers. Stealth and the size of their army.
