Mr80 outdoor

I have a netgear nighthawk mesh router mr80 and I was wondering what the operating temperatures are because I have a non insulated shed I’d like to get internet too. Right now I have a router in my garage and I just need to extend the signal a little more, so it gets inside the shed. That’s why I was wondering what its rated for so I could put another router in there. I have a weather poof box that I could put it in if that would help keep it warm in the winter?