
Image caption
(left to right) Surface temperature for December 2023, January 2024, and February 2024 compared to the 1991-2020 average. Places that were warmer than normal are red; places that were cooler than normal are blue. It was the warmest Northern Hemisphere winter and Southern Hemisphere summer in the 175-year record. Maps by NOAA Climate.gov, from our Data Snapshots collection, based on data from NOAA National Centers for Environmental Information.