From my experience, the hardware will not suffer from the temperature alone, even in Texas.
Technically speaking, Will provided a few number in this thread.
We even saw the story of a Shapeoko abandoned in a backyard in AZ and that was restored to full functional state, so this tells me the HW is solid.
The bigger concern can be humidity or lack thereof.
Very low humidity can induce static and therefore EMI issues, so a good grounding will help.
Very high humidity can have a bad effect on the MDF wasteboard.
Other than this, it pretty much only boils down to just double checking belt tension when the machine has undergone major temperature variations.
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