Image caption
Monthly mean temperature difference compared to the 20th-century average for December 2023 (left), January 2024 (middle), and February through the 13th (right). Many states that border the Great Lakes have been experiencing record to near-record winter warmth, with widespread temperature anomalies exceeding 10 degrees Fahrenheit in December and so far in February. Map by NOAA Climate.gov, based on data from NOAA NCEI.