On Saturday, January 27, 2018 at 5:47:27 PM UTC-5, wrote:
Let's cut to the chase:

a) Shelf-Life is not uniform. Factors such as heat, humidity, temperature cycling, even altitude and more must be included in the process.
b) The nature of the adhesives are factor.
c) That some components will separate into separate ingredients depending on temperature is a factor.
d) That some cures are catalytic is a factor - and that once started, will continue until complete.
e) That some cures require exterior stimulus is a factor.
f) And some low-end epoxies will crystallize, one part especially, even when fresh with a single exposure to low temperatures.

During the summer, my hobby room will undergo pretty wild temperature swings.

That sounds almost like the direct opposite of a wine cellar, which is kept at a certain temperature year-round for years. Even decades.