I did an Ottawa to North Bay trip last fall and got better than Ideal consumption overall (and got there easily without a charging stop). That was going about 95 km/h with little or no heat or AC since it was a comfortable temperature out.
And another comparison: Ottawa to Kingston at -24C: 252 Wh/km; then Utica to Ottawa at +9C: 182 Wh/km. Not quite apples-to-apples, since the Utica trip includes a section on slower roads, but the efficiency jump as you go from -10C to +10C is very dramatic.
Really happy that winter is winding down. Besides the efficiency gains, it'll be nice to be able to keep the car clean for more than 5 minutes after washing it.