Daily Forecast: July 27, 2025

Sunday will bring a mix of sun and cloud to the region, along with hot and humid temperatures. Humidex values in the upper 30s are expected for most areas.

There will be some showers around overnight, and some around tomorrow in Eastern Ontario. Otherwise, no precipitation is expected.

Heat Warnings have been issued for much of Southern Ontario. Environment Canada states that a multi-day heat event will begin tomorrow, and may continue into Wednesday for some areas. There will be little relief at night due to temperatures remaining in the 20s.

Ensure you remain hydrated throughout the day, even before you feel thirsty. Extreme heat affects everyone, including your pets.

Temperatures in red represent forecasted humidex values.