Average Humidity level for gun storage?

[Stainless]

I have a safe like closet I use for gun storage. What is the average humidity level for a sealed room or safe with weapons inside? I think it at about 40% the other day when I checked.

[NRA]

sounds about correct to me

[peejman]

If it's inside your climate controlled house, it'll be fine. Just be sure you wipe off any fingerprints and lightly oil bare surfaces. Most houses run 40-60% relative humidity.

[Parrothead]

If it's inside your climate controlled house, it'll be fine. Just be sure you wipe off any fingerprints and lightly oil bare surfaces. Most houses run 40-60% relative humidity.

Very true--in the summer. When using your heating system in the winter your humidity drops drastically. We find most homes without a humidifier run in the 15-25% range in the winter. this is less humid than the sahra. This is one of those nasty side effects of super efficient, tightly built homes.

[peejman]

Very true--in the summer. When using your heating system in the winter your humidity drops drastically. We find most homes without a humidifier run in the 15-25% range in the winter. this is less humid than the sahra. This is one of those nasty side effects of super efficient, tightly built homes.

Right, I was referring to the highest the humidity might be. Assuming the OP's concern was moisture related corrosion on his toys.

One thing to consider is just how "sealed" your room/safe really is. Relative humidity is just that... relative. It's based on the ambient temperature and is a measure of the air's ability to hold water. Air holds more water at higher temps. Here's the rub...

Say you have a nice, sealed gun safe. You open the door for a few minutes in the summer when it's 72 deg and 65% humidity in the house. You don't reopen it again until winter when it's 65 deg and 35% humidity in the house. If you don't have some sort of desiccant or other dehumidifier in the safe, you will find condensation (and possibly some corrosion) inside. Why? 65 deg air cannot hold the same amount of water vapor that 72 deg air can. So some of the water vapor will condense on surfaces inside the safe when the temperature drops. Same reason your cold beer bottle sweats in the summer.

Point is... if your room/safe is really "sealed", you'd better have something in there to keep the humidity under control. Else it's better to let the room/safe breathe and let your home's HVAC system control the humidity.