Thiais, France experiences a cool and variable winter season, with temperatures often dropping below freezing in January and February. As spring approaches, temperatures gradually rise, reaching averages of around 7-8°C by March and April. Summer is mild and warm, with July and August averaging around 19°C, but temperature fluctuations can still be significant, with highs sometimes reaching as high as 30-32°C. Autumn brings a return to cooler temperatures, with October and November resembling the winter months in terms of average low temperatures. Winter returns in December, mirroring the cold conditions of January and February.