Gatineau's winters are long and cold, with temperatures often dropping below -30°C in January and February. Spring arrives slowly, with March being a transitional month of mild days and chilly nights. By April and May, warmer air masses from the south dominate, bringing temperatures into the double digits. Summer is warm but not hot, with highs rarely exceeding 30°C, while autumn is similar to spring, with temperatures gradually cooling as summer's warmth recedes.