Mid-week storm, heavy rain on the way for Toronto, GTA
Posted September 8, 2026 12:46 pm.
Last Updated September 9, 2026 2:07 pm.
Wet weather is making a comeback just a week after Toronto and the GTA saw a torrential summer downpour that led to flooding, downed trees and wide spread power outages.
“If last week’s severity was a 10/10, I am forecasting [Wednesday’s] to be closer to five or six out of 10,” Ramsahai said.
Another round of storms is in store for the GTA on Wednesday, but CityNews Chief Meteorologist Natasha Ramsahai says they will not be as intense as last week.
Showers were expected to last through the morning commute. The morning saw temperatures around 21 C, which was well above the average morning low temperature of 11 C for this time of the year. Humidity was expected to continue into the afternoon with a humidex value reaching near 35 before the evening, making for a muggy day overall.
The morning showers were expected to increase the saturation level of the soil. Fast-moving storms and heavy downpours were expected to begin around 3 p.m. during school pickup and the afternoon commute. The rain is expected to last about two to three hours and there is also the potential for lightning between 4 p.m. and 6 p.m.
Toronto and areas east, including Oshawa and Peterborough, were expected to see the majority of the rain compared to the west, with about 10 to 20 millimetres expected. However, areas that get the thunderstorms could easily see close to 50 millimetres and the increased risk for localized flooding.
Compared to wind gusts that were forecast to be up to 130 kilometres per hour last week, this round of storms will see winds in the range of 60 to 80 kilometres per hour with isolated gusts near 90 kilometres per hour during storms, especially for the west GTA.
“We start talking about the potential for wind damage and power outages at 90+ kilometres per hour — in the city, we shouldn’t get there with these ones [on Wednesday],” she said.
The risk for power outages, hail and tornadoes remains much lower than last week’s intense storms.
