Winters in Sarcelles are cool and unpredictable, with temperatures fluctuating between freezing and mild. January is the coldest month on average, with temperatures often below 0°C, while February's temperatures can sometimes rise above 10°C. As spring approaches, March and April bring gradually warmer temperatures, but still experience occasional chilly days. Summer months of June to August are warm to hot, with highs reaching up to 30°C, but nighttime temperatures remain relatively cool. Autumn brings a return to more moderate temperatures, with September and October experiencing mild days and cooler nights, before the cold winter sets in again.