live in Upstate NY. Range drops ALOT in cold weather and snow, not only due to the cold, but the use of cabin heat and undoubtedly slippery conditions. Typically I'd say about 40% drop in range in our area, with temps -10 to 30 from Oct-Apr. Indeed poor cold weather performance is the main reason I waited as long as I did to get an EV...
So the 300+mile range of my AWD becomes more like 180-190, and with the rec to charge "only" to 80-90%, then 150-170.