Winnipeg's winters are brutally cold, with temperatures often plummeting below -30°C in January and February. Spring is slow to arrive, with March temperatures still dipping into the negatives but slowly rising towards mild days. Summer brings warmth, with June and July averages reaching up to 21°C and 23°C respectively, although occasional heatwaves can push temperatures above 35°C. Autumn returns to cooler temperatures, with October averaging around 9°C before dropping again in November and December, which are marked by another cold winter spell.