Climate of Edmonton
Edmonton has a humid continental climate (Dfb) and is in Plant Hardiness Zone 4a. Winters are cold but often sunny, and summers are mild to warm. In January the average low is about -10.3°C; in July the average high is about 18.1°C, with July highs around 23.5°C. It can stay above 30°C for about 4–5 days a year from late spring to early autumn, and winter temperatures frequently dip below -20°C for roughly 24 days.
Record temperatures show a recent heat peak: 37.4°C on June 30, 2021, beating 37.2°C in 1937. A very humid day on July 2, 2013 reached a humidex of 44 (33.9°C and a dew point of 23°C). The coldest temperatures ever recorded were -49.4°C in the 1880s–1890s.
The growing season lasts from about May 9 to September 22, giving around 135–140 frost-free days. Edmonton enjoys long summer daylight and bright sunshine—about 17 hours of daylight at the summer solstice and roughly 2,299 hours of sun per year.
Precipitation totals about 477 mm per year, with roughly 366 mm as rain and 111 mm as snow melt. July is the wettest month; February, March, October, and November are relatively dry. Thunderstorms and hail are common in summer, and there have been tornadoes, including the 1987 Black Friday tornado.
Climate change concerns are high: many residents worry about impacts, and the city is pursuing energy efficiency and solar projects. Projections suggest hotter summers and more heat days (around 16 extra days above 30°C by 2050) with higher average temperatures by 2080.
This page was last edited on 3 February 2026, at 01:41 (CET).