Global_September2023_tempanom_map_graph.png

(top) Surface temperatures in September 2023 compared to the 1991-2023 average. Many areas were warmer than average (red colors). Only a handful of locations were cooler than average (blue). (bottom) September temperature compared to the 20^th-century average from 1850 to 2023. Septembers have grown warmer at a rate of nearly 1 degree Fahrenheit (0.6 degrees Celsius) per century over the modern temperature record. NOAA Climate.gov map and graph, based on data from NOAA National Centers for Environmental Information.