Zhengzhou has a temperate continental monsoon climate characterized by four distinct seasons. Spring is dry, with little rain and frequent spring droughts, fluctuating temperatures, and strong winds. Summer is relatively hot with concentrated precipitation. Autumn is cool and short. Winter is long, dry, and cold, with little rain or snow. The 30-year average temperature is 14.7°C, with the average January temperature being 0.5°C, and the extreme low being -16.3°C (January 31, 1990). The average July temperature is 27.1°C, with the extreme high being 41.5°C (July 15, 2002). The lowest monthly average temperature is -1.71°C (January 2000), and the highest is 28.8°C (June 2009 and July 2010). The frost-free period averages 212.6 days per year, with a maximum of 231 days and a minimum of 181 days. The average annual sunshine duration is 1564.3 hours, and the annual total radiation is 452.6 kcal/cm². The temperature remains above 0°C for 306.7 days, with an average annual precipitation of 632.4 mm and an average number of rainy days of 78. The maximum annual rainfall was 1,339 mm in 2021, and the minimum was 380.6 mm in 1997. Rainfall is concentrated from June to August, with the heaviest rainfall occurring in August.
