It’s winter, but the first half of January didn’t look or feel like it. “It’s milder than normal. It may turn colder toward the end of the month,” said Jeff Zoltowski, a meteorologist with the National Weather Service. Leelanau resident and retired meteorologist Dave Barrons, a familiar face on local television for many years, says climate change is making expectations based on past years less reliable. “We’ve added more carbon dioxide to the air. Carbon dioxide holds more heat,” he said.