Been very cold here too in western Maine. Our lowest temp over the past 2 weeks was -23F, and we've consistently been -10F to -20F every single night. It would be even colder if the winds would relax, but it has been so windy throughout this entire time! Our lowest wind chill over this time period has been -42F!
The other morning it was -8F and we had a wind gust of 49MPH! Calculated wind chill then was that -42F.