I live in Mansfield Ohio and our humidity is probably the same as yours
I had some Ilford warmtone VC Fiber develop a fine light fog with a pattern that resembled grain or reticulation, But 5 or 6 sheets into the box the condition ceased. So freezing is a matter of economics also. I admit some of the paper is by now 3 to 4 years old but showing no sign of age fog. I have had RC lose contrast by almost a grade and a half. I didn’t bother trying to save it as I thought it was probably just too far gone.