Pierrefitte-sur-Seine's climate is characterized by mild winters, with temperatures often fluctuating between freezing and above-average levels, averaging around 4-7°C. As spring approaches, temperatures steadily rise, reaching averages of 12°C in May, with occasional warm days up to 26°C. Summer months are relatively cool, with highs rarely exceeding 29°C, while autumn brings a return to milder temperatures, albeit with some variability between 0-22°C. Winters are generally cold, but not extreme, with temperatures ranging from -5 to 15°C on average. Overall, the region's climate is moderate, with minimal extremes in temperature throughout the year.