Tim, I'm not exactly sure about temp sensitivity, you would have to look at the Kodak datasheet on their website. All I know is that people who shoot it routinely keep an ice pack cooler nearby when they unload the camera. Some people here are shooters, so if you search the threads a bit you will find names.
Oh, and the price: 20$ per 35mm roll! You don't want to waste that on an bad roll.