I found some expired film in my dad's garage in a cabinet drawer (not cooled). He lived out in Murrietta, CA, and the garage regularly gets to 90-100 Deg. F in the summer. The film includes VPS III, expired 1990s; Kodak color infrared; Kodak P3200. I am probably not going to take any chances on any of it (especially the color infrared, which I think is E-4). Add: I suspect it has been there for 10 years or more.
If your case were an issue, then we in the West could not travel to the desert with our film (at least without a cooler or ice chest).