https://www.owenscorning.com/en-us/roofing/blog/winter-roof-replacement
Homeowners can feel confident that professional roofing contractors can (and do!) work on roofs during cold and wintery conditions.

https://www.billraganroofing.com/blog/can-roofing-work-be-done-in-winter
Should I repair my roof in the winter? ... Yes, you should always get roof repairs if you have an active leak. No matter the time of year, letting ...

https://www.reddit.com/r/HomeImprovement/comments/f9fotz/roofer_wants_to_install_roof_in_very_cold_weather/
A roof must be installed when it's at least somewhat above freezing. This week, they've told us that they plan to install the roof this weekend.