In 2024, the city’ s annual average temperature was 19.4 deg;C, 1.0 deg;C higher than the long-term average and 0.1 deg;C higher than 2022, ranking as the second highest in historical records and climatically assessed as significantly elevated. Annual average temperatures ranged from 19.0 deg;C (Hengshan, Hengdong) to 19.8 deg;C (Changning City), reflecting a pattern of higher temperatures in the south compared to the north. Compared to the long-term average, temperatures were 0.7 deg;C higher (Hengshan, Hengdong, Hengyang urban area) to 1.4 deg;C higher (Changning). At Nanyue Mountain Station, the average temperature was 13.2 deg;C, 1.2 deg;C higher than the long-term average.

    The annual extreme minimum temperatures across counties (cities, districts) ranged from -4 deg;C (Hengshan) to -1.4 deg;C (Changning City), while Nanyue Mountain recorded an extreme minimum of -12.2 deg;C. The annual extreme maximum temperatures in counties (cities, districts) varied from 38.2 deg;C (Hengshan) to 39.0 deg;C (Leiyang), with Nanyue Mountain’s extreme maximum temperature reaching 28.9 deg;C.