Comment by josephduffy

I agree working in a wider range of ambient temperatures would be nice, but they do have a support article stating the temperature should be over 10°C, so I wouldn't say they've not tested it.

https://support.apple.com/en-gb/HT201640

Note that the iOS devices work from above 0°C (https://support.apple.com/en-sg/HT201678) so maybe improvements will be brought to laptops too.