I think it was 12 when I left the house. iPhone shut off 3/4 of the way to work. Didn't do that yesterday at the same temp, I think the windchill is worse today. Battery showed 10% and shut right back off, after it warmed up was 96%, can't remember the last time that happened. Probably only going to ride one more day this week, between the wind and the studded tires out of energy!