The batteries can be heated in cars with liquid thermal management systems which pretty much all new ones have (older Nissan leafs and others did not). This removes a lot of of the impact on range... except if you use use heat in the cabin.

Due to them being so efficient, most electric cars can't use waste heat like internal combustion cars, which means they need a separate electrical heater which of course has an impact on range.

This article: https://www.marketwatch.com/story/cold-weather-saps-electric...

> The automobile club tested the cars at 20 degrees and 95 degrees, comparing the range to when they were tested at 75 degrees Fahrenheit, according to a report on the study.

> At 20 degrees, the average driving range fell by 12% when the car’s cabin heater was not used. When the heater was turned on, the range dropped by 41%, AAA said.

> At 95 degrees, range dropped 4% without use of air conditioning, and fell by 17% when the cabin was cooled, the study found.