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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Perspective Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Plan for a mixed week across southern Ontario: Toronto and Mississauga can expect sun through Tuesday, then showers and cooler air midweek as a Great Lakes trough moves in. Highs will hover near 21°C early, dropping to 16°C by Thursday.
What’s the outlook for Toronto this week?
Toronto will see a dry start with morning clouds breaking to sun on Monday and Tuesday. A low-pressure system tracking east of Lake Ontario will bring rain Wednesday afternoon and lingering showers Thursday. The toronto weather 21 day forecast suggests a gradual warming trend for the weekend. For those checking weather in toronto 10 days, expect a return to seasonal highs near 20°C by Saturday. If you need a longer view, the toronto weather 30 days outlook shows typical autumn variability.
How does Calgary’s week compare?
For readers looking at calgary weather this week, a ridge of high pressure means mainly sunny skies with afternoon highs in the low 20s Celsius. A weak cold front late Thursday could bring a brief shower, but nothing significant. The weather this week mississauga pattern mirrors Toronto’s, though Mississauga may see slightly less rain due to its position farther from the lake.
Will it rain all day Wednesday in Toronto?
No, the rain is expected to arrive mid-afternoon and continue into the evening. Morning hours should remain dry. The chance of measurable precipitation is about 60 percent, with totals under 10 millimetres.
When is the best day for outdoor plans this week?
Tuesday offers the most stable weather across southern Ontario: sunny skies, light winds, and a high near 22°C. Ideal for a walk by the lakeshore or a trip to the Toronto Islands.
Are any weather warnings in effect this week?
No warnings are posted as of Monday morning. The midweek system is not expected to produce severe conditions, but lake breezes may create rapid temperature shifts near the coast. Check the weather warning page for updates.