Winters in Athis-Mons are typically cool and occasionally frosty, with temperatures ranging from just below freezing to mild highs of around 14°C in January. As the season progresses, temperatures gradually warm up, leading into a spring period characterized by moderate temperatures, often oscillating between chilly lows and pleasant highs of up to 25°C. Summer months bring a welcome warmth, but the temperature fluctuations are relatively limited, with average highs rarely surpassing 30°C. Autumn is marked by a gentle cooling trend, returning to cooler temperatures that resemble those of winter, albeit without the extreme lows seen in January.