Daily Forecast: June 23, 2025

Another hot and humid day is forecasted across the region tomorrow, along with mainly sunny skies. There will be another risk for pop-up showers and thunderstorms.

High temperatures will be in the mid 30s with humidex values into the mid 40s across much of the are. Avoid extended periods of time in the sun and ensure you stay hydrated. Drink plenty of water, even before you feel thirsty. Check on young children, the elderly and your pets. Heat Warnings are in effect across Southern Ontario.

Further hot temperatures are expected on Tuesday, with the potential for thunderstorms. We are also watching the potential for the heat to continue into Wednesday and possibly Thursday in some areas, as well as the risk for thunderstorms both days.

Temperatures in red represent forecasted humidex values.