Please note this is for only one(1) S9

So Ive hired an electrician to come wire a 220 to my garage tomorrow but Im having second thoughts. Could running a S9 in below freezing temperates for extended use cause harm? Let me elaborate. I was debating on to put mine in the garage, considering its winter. Everybody always runs AC to them but never this cold. I live in MO so it rarely if ever goes subzero. Im thinking that it would only increasing cooling because the machine produces such a tremendous amount of heat as it is. Eventually the room would reach a maximum temperate but Im unsure of what it would be. Also might I add this is only a one car ranch garage. Im unsure of the square footage, Id say maybe 15x15x30 with open attic access. I live in Missouri as stated so the weather its very unpredictable. The main thing Im worried about is humidity. Not really rain. Think as how long and how much it takes for a cold glass of water to have water drops outside the glass. That is condensation of said humidity. This is what worries me. The head from the S9 and the cold from the garage. This small of a garage has me thinking it will warm to a somewhat decent level but I do not know. My weather app has local weather for this week as follows:

Day - high - low

Tuesday-43-37
W-58-52
Th-57-19
F-30-19
S-25-9
Su-22-13
M-26-12

Any help would be helpful as he is scheduled for 9am Wednesday morning. Thank you!