Winters in Courbevoie are cool and unpredictable, with temperatures often fluctuating between freezing and mild. January is the coldest month, averaging around 4°C, while February is similarly chilly, but March brings a welcome rise in temperature as it averages around 7°C. Spring arrives in April, with temperatures gradually warming up to an average of 8°C, and May sees a significant jump to 12°C, marking the beginning of warmer days. Summer months are mild, with July being the warmest, averaging around 19°C, but temperatures rarely soar above 30°C. Autumn brings a return to cooler temperatures, with October and November averaging around 11°C and 6°C respectively, before winter sets in once again.