Lu'an's climate is characterized by cold winters with occasional warm days, as seen in the fluctuations between -10°C and 21°C in January. Spring is mild, with temperatures gradually warming up from 2°C in March to a high of 33°C in April. Summer brings warmth, with July being the hottest month, but even then, nighttime temperatures remain relatively cool around 22°C. Autumn is similar to spring, with temperatures dropping back down to as low as -7°C by December, but still experiencing warm days up to 23°C in November.