Yeah, 82F is a cool day here in North Carolina in the summer. My gear lives in the back of my truck -- all the cameras, all the lights, often much of the computer gear, locked in Think Tank and Pelican cases. I've never worried about the heat, and never had a problem. Camera gear can handle a lot of abuse.
Now if it were film, you might have some issues. Not with the gear, but with the film itself.