Sunny with a high of 61 °F (16.1 °C). Winds NW at 9 to 12 mph (14.5 to 19.3 kph). Night - Mostly cloudy. Winds variable at 2 to 9 mph (3.2 to 14.5 kph). The overnight low will be 39 °F (3.9 °C).

A taste of summer heat in southern Ontario on Tuesday could also set off severe thunderstorms in the afternoon and evening, ...

A weather system could bring severe thunderstorms, a tornado risk, strong wind and large hail to southern Ontario.

Dangerous thunderstorms are possible across southern Ontario Tuesday. Environment Canada has issued a thunderstorm watch for ...