YouTube video by Instant Weather

YouTube video by Instant Weather

The calendar may say September, with the first day of meteorological fall arriving on Tuesday, but the next 24 hours are shaping up to bring potentially the most volatile severe weather risk we’ve see...

YouTube video by Instant Weather

As the clock ticks down on the final weeks of summer across Southern Ontario, we’re set to get a taste of fall-like weather later this weekend that may have you reaching for a pumpkin spice latte. Th...

YouTube video by Instant Weather

Another storm threat is on the horizon for Southern Ontario this week, with widespread severe weather potential expected across a large portion of Southwestern Ontario and into the Golden Horseshoe on...

After at least two tornadoes were confirmed to have touched down in Southern Ontario on Saturday, the risk of active weather will continue into the start of the week. A complex, multi-wave severe wea...

Hot and humid conditions have returned to Southern Ontario, helping fuel isolated pop-up thunderstorms over the past few days. While most of these storms have remained below severe limits, that is ex...

For as long as Canadians have received Tornado Warnings on their phones, those warnings have been shaped by lines that have nothing to do with weather. Municipal boundaries. County lines. Forecast re...

After a few days of below-seasonal temperatures across Southern Ontario, with daytime highs making it feel more like early September, temperatures are back on the upswing over the next few days. The ...

After an active storm day on Saturday brought a rare tornado warning to the Greater Toronto Area along with several reports of damaging winds, Southern Ontario is set to face another severe thundersto...

A potentially significant severe weather event is expected across much of Southern Ontario on Saturday as a strong cold front sweeps through the region. The greatest risk is focused on the Greater Tor...

Dangerously hot temperatures are returning to Southern Ontario, bringing another multi-day heat wave to the region. This heat wave is expected to peak on Tuesday, when temperatures could climb into th...

With the return of more seasonal temperatures across Southern Ontario, the past week has been fairly quiet on the storm front. That has certainly been a noticeable change compared to the nearly daily ...

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Hot and humid weather has arrived across Southern Ontario just in time for Canada Day, with temperatures soaring into the mid-to-upper 30s, with the humidex making it feel into the 40s. While many wil...

YouTube video by Instant Weather

THIS FORECAST IS SPONSORED BY:

An unusually strong and deepening low pressure system for mid-June is set to track through the Great Lakes region overnight Wednesday and into Thursday. This powerful system will bring the potential f...

After an active, severe weather day on Monday that left widespread damage across parts of Central Ontario, especially throughout cottage country, another volatile day is shaping up across Southern Ont...

Southern Ontario is about to get its first real taste of summer weather in 2026, and it’s arriving with a potentially stormy side effect. Temperatures are expected to soar into the upper 20s and even...

After a chilly and wet start to May across Southern Ontario, it finally looks like summer is ready to make an appearance, just in time for the Victoria Day long weekend. The first half of the month h...

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Southern Ontario faces the first widespread severe weather threat of 2026 on Tuesday, which is already underway as overnight storms carrying a flooding and hail risk developed around midnight. While ...

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A powerful and complex storm system is set to impact Ontario beginning Sunday and continuing into early next week. While Southern Ontario will mainly deal with a messy mix of precipitation and rain fo...

While we started off the week with a taste of spring-like weather across Southern Ontario, with widespread double-digit temperatures and even readings soaring near 20°C in some areas, the end of the w...

Widespread snow is expected to move across Southern Ontario beginning late Friday morning and continuing throughout much of the afternoon and evening. While this will not be a major snowstorm, the com...

An ice storm has been impacting parts of Central and Eastern Ontario throughout the day on Wednesday, leaving thousands of residents without power. The number of outages is expected to continue climbi...

A complex weather story is set to unfold across Southern Ontario over the next 24 hours as cold and warm air clash across the region while a moisture-laden system moves through. The biggest impact wi...

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Over the past few days, Southern Ontario has been treated to an early taste of spring-like weather. Temperatures soared well into the double digits across many areas, and some locations even managed t...

NOTE : We issue a ‘snow day’ forecast every school night, even when there is no chance. Our daily updates for the season will conclude on March 31st .

NOTE : We issue a ‘snow day’ forecast every school night, even when there is no chance. Our daily updates for the season will conclude on March 31st .

After what felt like a winter that would never end across Southern Ontario, our first widespread taste of spring-like weather is finally on the horizon just in time for the weekend. While parts of So...

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Thick fog is expected to redevelop across portions of Southwestern Ontario on Wednesday evening, with some of that fog potentially lingering into the early hours of Thursday morning. This comes after...

Localized patches of thick fog are expected to develop across parts of Southern Ontario late Tuesday night and persist into Wednesday morning. In some areas, this fog could become quite dense, reducin...

No impactful winter weather is expected across Southern Ontario throughout the school day on Tuesday. As a result, all regions have a less than 5 percent chance of school bus cancellations.

No impactful winter weather is expected across Southern Ontario throughout the school day on Monday. While a cold warning is in effect for some areas, wind chills aren’t expected to reach the threshol...