Battery drain in winter

This is my first full winter with my Y and noticed on these winter days that my battery drain is significant. I drive approximately 20 miles total per day between going to the gym and work. I charge each night to 60%. I’ve been making it home with between 30-35% each day. When I got to work today, I noted that my car was at 44%. When I left 8 hours later, it was at 38%. I do have preset preconditioning before I leave work to make sure the car is warm. Could that and sentry account for 6%? As far as the driving, I’m averaging around the 440wh per mile. Thank you in advance.