"2023 Marks Record-Breaking Heat Across U.S. Cities and Beyond"

In 2023, numerous U.S. cities experienced their hottest year on record, with significant representation from Texas and Florida, as well as cities in the Northeast and along the Gulf Coast. December ended the year with exceptional warmth, particularly in the Upper Midwest and Great Lakes, leading to the lowest ice coverage in at least 50 years. The year's warmth contributed to historically low snowfall in the Mid-Atlantic and Northeast, with several cities setting records for the least snow. The combination of a strong El Niño and human-caused climate change is largely to blame for the increased temperatures, which also exacerbated the summer fire season in Canada.