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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the BuzzLayer Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Toronto’s monthly weather shifts from freezing January highs near -1°C to humid July peaks around 27°C, with spring and fall offering the most temperate transitions. The live forecast above shows today’s conditions, but the long view reveals a city shaped by Lake Ontario’s moderating influence.
What are Toronto’s monthly temperature and precipitation averages?
Toronto’s climate is humid continental, with Lake Ontario keeping winters slightly milder and summers cooler than inland Ontario. January averages a high of -1°C and low of -7°C, while July reaches 27°C and 18°C. Precipitation is fairly steady year-round, ranging from 45 mm in February to 75 mm in June. Snowfall peaks in January at about 30 cm, but the lake often spares the city the heaviest lake-effect bands seen farther east.
How do the seasons break down for planning?
Spring (March to May) warms from 5°C to 19°C, with March weather Toronto 2026 likely bringing lingering chill and occasional wet snow. Summer (June to August) is humid but bearable near the lake. Autumn (September to November) cools from 22°C to 7°C, offering crisp, sunny days. Winter (December to February) stays below freezing, but the city rarely sees the deep cold of Prairie centres like Calgary or Edmonton.
What is the best month to visit Toronto for mild weather?
September offers the most comfortable mix: average highs of 22°C, low humidity, and minimal rain. It’s warm enough for patio dining and lakefront walks without summer’s stickiness.
Does Toronto get extreme heat or cold?
Heat waves can push July highs above 35°C with humidex, while Arctic outbreaks drop January lows to -20°C. Lake Ontario moderates extremes, but both are possible for a few days each year.
How reliable are long-range forecasts for Toronto?
Environment Canada’s 14-day outlook is moderately reliable for trends, but day-to-day accuracy drops after 7 days. For planning, check the Toronto weather page and the live forecast above.