Bois-Colombes experiences mild winters with temperatures often hovering around freezing point, occasionally dropping below -7°C in February. Spring brings rising temperatures, with April and May averaging highs of up to 25°C and 27°C respectively. Summer is warm, but not hot, with July and August averaging highs around 30°C. Autumn is a relatively cool season, with October experiencing lows just above freezing point. Winters are generally chilly, with temperatures rarely rising above 15°C in December.