Portland's winter is cold and grey, with temperatures often below freezing, especially in January and February, averaging around -2 and -3 degrees Celsius respectively. As the season transitions into spring, March brings warmer days, with temperatures ranging from -14 to 22 degrees Celsius, while April sees a steady rise to an average of 8 degrees Celsius. Summer months are mild, with June and July averaging around 21 and 20 degrees Celsius, respectively, but still experiencing occasional cooler nights. Autumn is similarly moderate, with September's warmth giving way to October's chill, and November's temperatures hovering just above freezing. By December, the cold and grey of winter return, with average temperatures barely scraping above 0 degrees Celsius.