Hejin's climate is characterized by distinct seasonal patterns. Spring brings mild temperatures, with March averaging around 15°C and a range of 9-20°C, while April warms up further, reaching an average high of 24°C. Summer months are hot and humid, with July being the warmest, averaging 29°C. Autumn is a pleasant season, with September experiencing an average temperature of 18°C, gradually cooling down to around 10°C in November. Winter is cold and dry, with January being the chilliest month, averaging -1°C.