Rainy, thundery Saturday night in Ontario before a fall-like Sunday
Thunderstorm potential creeps into southern Ontario for the weekend, with temperatures cooling on Sunday
Rounds of strong to severe thunderstorms pushed through parts of southern Ontario on Saturday, providing an unsettled kickoff to the weekend.
Expect the risk for showers and thunderstorms to continue overnight across the region. Once the active weather is behind us, an atmospheric reward is in the forecast for your Sunday.
Be sure to stay alert to the changing conditions, and monitor any weather warnings or alerts in your area.
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Fall-like feel to Sunday
Sunday will bring a sharp shift in weather as northwesterly winds move in. Temperatures will struggle to reach the 20s in the GTA, and much of the region will experience scattered afternoon showers. Expect a cooler day with a noticeably fall-like feel compared to earlier in the week.
Occasional showers are expected to linger across Ontario through Monday and potentially into Tuesday morning, accompanied by brisk northwest winds. Daytime highs will range from the upper teens to lower 20s. Temperatures are forecast to return to near-seasonal values mid-week, with another chance for showers or thunderstorms late Thursday into Friday.
Temperatures trend warmer for back-to-school
As August wraps up, expect near or slightly below seasonal temperatures for the final weekend. The first week of September is projected to bring near-seasonal conditions, with warmer-than-normal temperatures likely for back-to-school week.
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Forecasters are keeping an eye on a developing tropical storm in the western Pacific, which is expected to strengthen into a major typhoon. If the typhoon tracks near Japan, it could alter the expected weather pattern, potentially delaying the warmer trend and resulting in cooler-than-normal temperatures by the end of the week.
Header image created using graphics and imagery from Canva.