2017 Bolt EV with 103,000mi. Battery was changed in April. During the peak summer I was getting roughly 300mi of range.
Currently the temperature has dropped from 80 to 20 degrees f. My range has dropped to roughly 140mi non-highway driving. To add to the loss, the CC2 tires have dropped it roughly 15%. A little nervous with subzero temps approaching, but a fun ride.
Only about 10% loss if I charge for at least 1-2 hours before departure as it warms up the battery and improves range. I have a very large EV (R1S) and I think heating the cabin is a smaller range hit because the battery is so big.