Wow...I live in Texas...I never switched the A/C off this winter. It didn't stay very cold for more than a few days at a time so the apt. never cooled down from the weather alone.
Same here accept I am in Charleston, South Carolina. Even with the air conditioner on I worry if my chins are to warm because the heat index during the summer stays in the 100's. Although, I must say, we had a cooler than normal winter this year.