Winters in South Lyon are quite cold, with temperatures often below freezing, especially in January and February when lows can drop as low as -27°C. Spring brings a gradual warming trend, with temperatures rising steadily throughout March and April. By May, temperatures are mild and pleasant, setting the stage for warm summer months where highs consistently reach the mid-30s Celsius. Summer is characterized by relatively stable temperatures, with minimal fluctuation between June and August. As autumn arrives in September, temperatures begin to cool once more, but still remain relatively mild compared to winter.