Welcome to the Forums Tom! Glad to have you aboard!
I'm not positive, but I think most paints are labeled to be kept at below 70 to 75 tops. If you keep them in a place where they are out of the direct sunshine, a box in a dark corner, they might be OK. I work out of what was a spare bedroom in the house so I don't have that problem. I think that the same would apply for the Tamiya cement. If you go to the Painting sub-forum here and ask this question, you'll probably get a lot of answers. The members are very knowledgeable and always willing to help out. Hope that this helps.
Jim
Main WIP:
On the Bench: Artesania Latina (aka) Artists in the Latrine 1/75 Bluenose II
I keep hitting "escape", but I'm still here.