Helong's climate is characterized by cold winters with temperatures often below freezing. Spring brings gradual warming, but March remains quite chilly with average temperatures hovering around a mild 10°C. Summer months are relatively cool compared to other parts of China, with July highs peaking at about 22°C. Autumn sees a return to cooler conditions, with September averaging around 12°C. Winter is the coldest season, with January temperatures often dropping below -5°C, showcasing the region's continental climate influence.