This Thinkcenter is one of my best build computers. I ran it outside for an entire winter and it has survived rain, snow, and the cold.
It never failed, even when it was pouring, covered in 2 feet of snow, or in -20 degress celcius. I used it as mo outdoor SDR radio computer
under my deck to keep it slightly more sheltered. It always kept up with the software and recieved many satellite communcations.
it is now inside while I make a more permanent spot for it, but it will be going back outside too.