Decatur's winters are chilly and unpredictable, with temperatures fluctuating between freezing cold and mild. Spring brings a gradual warming trend, but March is the first month to experience significant temperature increases, averaging 14°C. As summer approaches, temperatures steadily rise, peaking in July and August with averages around 25°C. Autumn is similar to spring, with temperatures gradually cooling down, although September remains relatively warm. Winters are generally mild, with temperatures rarely dipping below -4°C, making the area suitable for outdoor activities year-round.