Daily Forecast: June 21, 2025

A hot and humid day is expected across the region tomorrow, with mainly sunny skies. There will be rounds of showers and thunderstorms through the day.

There will be some showers and thunderstorms that also move through Southwestern Ontario in the morning hours.

The second risk of thunderstorms will come during the evening in Central Ontario, and then a third risk for Central and Eastern Ontario, as well as the GTA tomorrow night into Sunday morning. These storms may be strong to severe, with threats of heavy downpours, strong wind gusts, large hail, and the risk for a tornado. More details will be posted tomorrow.

Ensure you remain hydrated tomorrow as it will be turning hot and humid. Heat Warnings have been issued for Extreme Southwestern Ontario. The hot and humid weather will become more widespread for Sunday.