A heat wave begins today (June 28) in southern Ontario including the Kawarthas — just in time for the real beginning of summer for kids, with today being the final day of classes for elementary school students and of exams for high school students. Environment Canada has already issued a special weather statement to advise of an “extreme heat event” beginning on Saturday (June 30) and continuing through the Canada Day long weekend. And today, Peterborough Public Health issued its first heat warning for the season. Daytime highs this weekend are expected to reach the low to mid thirties with humidex values into the mid forties. Overnight low temperatures will only fall to the low twenties, providing little or no relief from the heat. VIDEO: “School’s Out for Summer” by Alice Cooper from the film Dazed and Confused Beginning Saturday and continuing through the Canada Day long weekend, daytime highs are expected to reach the low to mid thirties with humidex values into the mid forties. Overnight low temperatures will only fall to the low twenties, providing little or no relief from the heat. It will start to heat up today and by Friday, when sunny skies return, temperatures will tip over 30°C. The heat will continue to climb on Saturday and Sunday. The long-range forecast predicts the heat wave will continue for most if not all of next week, with temperatures remaining in the low thirties every day.<doc-sep>ONTARIO | Oppressive July Heat and Thunderstorm Risk Powerful storms break Ontario's sweltering heat...for now Find Your Forecast Search for a location Digital writers theweathernetwork.com Thursday, July 5, 2018, 12:47 PM - Relief from the heat is in sight Ontario as we look ahead to the weekend. Here's what to expect, and when forecasters expect a pattern change. WEATHER HIGHLIGHTS: Heat warnings still in effect, feeling over 40 degrees Heat, humidity build again next week, but not to the same extent as the current heat (RELATED: Five horrible things extreme heat does to the human body) ONTARIO CONTINUES TO BAKE Heat warnings remain in effect for all of southern Ontario and the Nickel Belt, as the most intense heat event in years continues for yet another day. "Temperatures are expected to be in the low to mid thirties with Humidex values likely to reach near forty again today," Environment Canada says. "Overnight low temperatures are expected to be in the low twenties, except high teens in some rural areas, providing little or no relief from the heat." (Stay on top of severe weather in your area | Our national alerts page) MORE HEAT THEN PATTERN CHANGE<doc-sep>Environment Canada has updated its heat advisory for southern Ontario, warning about high humidex values. The agency says with the humidity Monday, it will feel like 43. The air temperature will be 30 or above until Friday when a cold front is forecast to pass through southern Ontario. We could also see a cold front Monday afternoon, which will bring a cooler and less humid air mass. However, daytime highs are still expected in the low thirties in the next two days. Overnight low temperatures in the high teens will some relief from the extreme heat. Environment Canada warns this extreme heat event will continue though for most of the week, calling this streak the most significant heat event in the past few years.<doc-sep>Send this page to someone via email A persistent heat wave is gripping parts of the Northern Hemisphere and smashing weather records in Canada, the United States, Europe and the Middle East. The scorching sun has brought deadly temperatures to some cities; in Montreal, 11 people have died in connection with the ongoing heat wave, according to city officials. READ MORE: At least 18 dead in Quebec as heat wave continues “This has been a prolonged and intense heat event across Eastern Canada,” Global News meteorologist Ross Hull said. “This has been the hottest stretch of weather in more than a decade and record-high temperatures have been shattered, especially in Montreal where record-high temperatures dating back to 1963 were broken on July 1 and 2.” Here is a look at the sweltering temperatures around the world. Story continues below advertisement WATCH: Maritime heatwave continues as humidex expected to reach 42 1:46 Maritime heatwave continues as humidex expected to reach 42 Maritime heatwave continues as humidex expected to reach 42 – Jul 3, 2018 North America A heat wave blanketing parts of Canada and the northeastern United States has prompted many cities to issue heat warnings and health officials have set up drop-in cooling centres. In southern Ontario, the humidex in Ottawa on Canada Day was 47, the highest recorded for the city. On Monday, the heat and humidity made it feel closer to 41. READ MORE: Canada Day heat wave reduces Parliament Hill turnout And Montreal reached a record 37 C on July 2. Montreal health officials blamed the heavy heat and humidity for at least 11 deaths in recent days. Story continues below advertisement According to Hull, there is some relief in sight for Canada. “A cold front will move through Eastern Canada Thursday night into Friday, bringing showers and thunderstorms but also dropping temperatures out of the thirties and finally breaking the oppressive humidity,” he said. WATCH: Heatwave hits eastern Canada over long weekend 2:05 Heatwave hits eastern Canada over long weekend Heatwave hits eastern Canada over long weekend – Jun 30, 2018 The excessive heat warning is also gripping the northeastern U.S. Parts of New England experienced record-setting temperatures over the weekend. And excessive heat warnings and advisories issued in New York and New Jersey, with heat index values up to 41. Denver tied its all-time high temperature of 40 C on June 28. WATCH: At least 17 deaths in Quebec linked to heatwave 3:20 At least 17 deaths in Quebec linked to heatwave At least 17 deaths in Quebec linked to heatwave – Jul 4, 2018 At least one heat-related death has been reported in the U.S. since the heat wave began late last week — a Pennsylvania woman who died while working in her garden on Saturday. Another death, of an elderly man in Kansas City, was being investigated. Story continues below advertisement Europe Scotland recorded its highest temperatures ever at the end of June. On June 28, a temperature of 33.2 C in Motherwell broke a record set back in 2003. It was so hot in Glasgow that some of the weatherproof membrane on the roof of a science centre melted and oozed down the building. How hot? So hot the Glasgow Science Centre roof is melting a bit 🔆🔆🔆 https://t.co/TUzm3GJZ1K pic.twitter.com/I5uNLBcnWv — BBC Scotland News (@BBCScotlandNews) June 28, 2018 Story continues below advertisement Last month was the warmest June on record in Northern Ireland and Wales, and the fourth warmest in Scotland and England, according to Sky News. In southern Russia, temperatures soared to 37 C in Rostov-On-Don, where some of the FIFA World Cup matches are taking place. WATCH: UK heatwave expected to last well into July 1:26 UK heatwave expected to last well into July UK heatwave expected to last well into July – Jun 30, 2018 Middle East The Middle East is also breaking weather records. Last week in Quriyat located on Oman’s northeast coast, a new world temperature record was reached. The temperature in the village remained above 42.6 C for 51 straight hours, making it the highest nightly low temperature observed on Earth’s surface, according to the Weather Network What’s causing the prolonged heat waves? Heat waves are nothing new. But the duration and extremeness are linked to climate change, according to Blair Feltmate, a University of Waterloo climate scientist. Story continues below advertisement READ MORE: Expect energy costs to soar as Canada gets hotter “All the predictions illustrate that going forward in Canada, things are going to be hotter, wetter and wilder,” he said. “It’s not any particular year that matters. What matters is the overall, the long-term trend.” Globally, the world’s average annual temperature is 1 C warmer than it was a century ago, Feltmate added. — With files from the Canadian Press<doc-sep>
Relief from the extreme heat is in sight. Toronto remained under a heat warning on Monday but Environment Canada says temperatures are forecast to cool by Friday. A cold front that is expected to pass over Southern Ontario this week will bring that "cool-down," the federal weather agency says. The sweltering weather, meanwhile, brought families to Toronto beaches in droves on Monday. People at the shoreline of Woodbine Beach try to stay cool as the city suffers through an extreme heat event. (Martin Trainor/CBC) Environment Canada first issued a heat warning for the city on Thursday, to let residents know that extreme heat was starting on Friday. The warning has been extended as a hot and humid air mass continues to hang over the city. Slightly unsettled weather was predicted on Monday afternoon. Environment Canada said temperatures were forecast to edge down in the afternoon with a slightly cooler and less humid air mass passing over southern Ontario. The temperature on Monday is expected to hit 33 C but it will feel like 43 with the humidity. The forecast says there is a risk of thunderstorms on Monday afternoon, with a 60 per cent chance of showers. Over the next two days, temperatures are still expected to be in the low 30s, while overnight low temperatures are forecast to be in the high teens. Heat, humidity could return Wednesday Environment Canada says the heat and humidity could return on Wednesday. For Wednesday and Thursday, the forecast is calling for daytime highs of near the mid-30s, with the humidity making it feel like the mid-40s. Overnight low temperatures are forecast to be in low-20s and high teens in some rural areas. On Friday, the high is expected to be 28 C, with a low of 14 at night. The federal weather agency says the city is in the midst of an "extreme heat event." It has said the heat event is significant because of its duration. "Never leave people or pets inside a parked vehicle," it advises. "Extreme heat affects everyone. The risks are greater for young children, pregnant women, older adults, people with chronic illnesses and people working or exercising outdoors."