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The end of the last weekend in June will be hot and sticky in southern Ontario, accompanied by the possibility of thunderstorms before the cold front cuts off the heat and humidity for Monday. The risk will be dissipated and not everyone will see rain, however, so the day will not be to write off. Just watch your time when you go out. This week will start to be cooler, but temperatures will gradually rise as Canada Day approaches. More on what you can expect on Sunday and beyond, below.
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SUNDAY: THE HEAT COMES AT RISK OF A STORM BEFORE THE TEMPERATURES FALL
Heat warnings remain in effect all day on Sunday for the city of Toronto and the regions of Halton Peel and Windsor-Essex-Chatham-Kent, as high temperatures and high humidity remain. Daily highs will rise to the low 30s for most of the area.
This will be the last day for hot and cloudy conditions, as a cold front sweeping south through the countryside will allow for scattered rainfall and thunderstorms in the afternoon.
However, Sunday will by no means be a wash and not everyone will see a storm, but the front plowing in the dirty air will create a risk of bouncing storms here and there.
The threat of thunderstorms will begin to rise around noon for parts of southern Ontario, continuing into the evening until the front breaks through. Any storms that start, however, can lead to local heavy rainfall and strong gusts of wind.
After dinner and late at night, much of the villa and eastern Ontario will see thunderstorms and heavy rainfall.
While the turbulent activity will be scattered in southern Ontario, we will see more widespread activity throughout the country and in the northern parts. The greatest chance of organized hard weather will fall in far northern Ontario to James Bay, expanding into northwestern Quebec.
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LOOK AHEAD: CANCEL WITH HEAT AS TEMPERATURES COOL, BUT YOU CAN GO BACK FOR CANADA DAY
Temperatures and humidity levels will drop behind the front, making for a much more comfortable Monday for southern Ontario. In addition, winds from the northwest will intensify in the region with gusts between 40-60 km / h in the afternoon and early evening.
Cooler weather will persist earlier this week, with temperatures falling a few degrees below seasonal. Daily highs will drop to the low 20 to begin the last week of June.
Then the temperatures will approach almost seasonal for the middle of this week with a risk of thunderstorms.
Forecasters are also monitoring the potential for one or two days of hot and humid weather at the end of the week, most likely until the arrival of Canada Day. The heat is most likely in southern Ontario, but there is less confidence in the Ottawa Valley.
However, an approaching cold front is expected to bring a threat of thunderstorms, followed by cooler weather for the rest of the long weekend.
Stay tuned with The Weather Network for the latest weather updates for Ontario and Quebec.
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