Toronto's weather is about to get scorching and here's when it'll feel like 43 C

This heat wave will be no joke! 🥵

Leuty Lifeguard Station at Kew-Balmy Beach, The Beaches, Toronto on a summer's day.

Toronto is set to get a big heat wave.

Elena Elisseeva | Dreamstime
Writer

Toronto's weather is set to take a significant turn this weekend and into early next week as the city prepares for a major heat wave.

After a round of thunderstorms rolls through southern Ontario on Friday and Saturday, the city will be plunged into full-on summer mode starting Sunday, with a blast of intense heat and humidity that could last for days.

The Weather Network expects temperatures to climb into the low to mid-30s, but thanks to the humidity, they could feel closer to 43 C.

Monday is shaping up to be the hottest day, with forecasts suggesting Toronto Pearson Airport could hit 35 C. That would rank among the hottest June days in the city's recorded history.

The Weather Network says if the city experiences three days in a row above 33 C, it will be the first time this has happened in June in over a decade.

And don't expect much relief at night — overnight lows could stay stuck in the mid-20s, making it hard for homes without air conditioning to cool down.

Before the heat rolls in, scattered storms will sweep across the region on Friday and Saturday, bringing heavy downpours and gusty winds to parts of southern Ontario. But once they pass, the genuine concern becomes the extreme and sustained heat.

While it's great to have warm weather, stay safe out there. Environment Canada is urging Torontonians to ensure that they're well hydrated and monitoring symptoms for heat illness. Avoid being outdoors during peak temps and remain in a cool, shaded area. Also, be mindful of what time of the day you bring your pet for a walk.

Whether or not records fall, this is shaping up to be one of the hottest starts to summer Toronto has seen in years — and it's only June.

Stay safe out there, Torontonians!

AI tools may have been used to support the creation or distribution of this content; however, it has been carefully edited and fact-checked by a member of Narcity's Editorial team. For more information on our use of AI, please visit our Editorial Standards page.

  • Originally from Ireland, Tomás Keating is a Toronto-based Contributing Writer for Narcity. After graduating with a Masters in Journalism from the University of Galway in 2019, Tomás utilized his passion for news, current affairs, pop culture and sports as a digital journalist before relocating to Toronto in 2024. In his spare time, Tomás loves exploring the city, going to the cinema and playing Gaelic football with his local GAA club in Toronto.

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