Southern Ontario Weather

• Southern Ontario set to bake under another heat wave, humidex to go over 40 C

  A fresh warning issued by Environment Canada on Friday afternoon predicts temperatures will begin to rise on Saturday and remain high until the middle of next week.

  Weather

  Aug 8, 2025
  
• Spring is here and parts of Ontario could get their biggest snowfall this year

  Spring officially arrived on Tuesday, but parts of southern Ontario could see their "most significant snowfall so far this season" starting Friday.

  Weather

  Mar 21, 2024
  
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• ‘Weather whiplash’: Arctic blast to follow warm temps, possible thunderstorms in southern Ontario

  Southern Ontario residents are set to experience a "weather whiplash" this week, with an Arctic blast set to follow possible thunderstorms and double-digit high temperatures.

  Weather

  Feb 26, 2024
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• Snow on the way as more typical winter weather returns to southern Ontario

  Temperatures have dropped and snow is possible later this week in southern Ontario as more typical winter weather returns to the region. 

  Weather

  Feb 12, 2024
• How long will the frigid temperatures last in southern Ontario?

  Frigid temperatures have moved into southern Ontario — so how long will this period of cold weather last?

  Weather

  Jan 15, 2024
• Labour Day weekend weather looking ‘just about perfect’ for southern Ontario

  Looking ahead to the long weekend, there's good news for southern Ontario weather-wise. 

  Weather

  Aug 29, 2023
• Unsettled weather, cooler temperatures expected in Ontario

  Cooler temperatures are in the forecast for parts of Ontario, with single-digit lows even likely soon in northern areas of the province.

  Weather

  Aug 22, 2023
• Cold front to bring relief following ‘extremely hot’ conditions Friday in much of southern Ontario

  A heat warning covers areas including Barrie, the GTA, Hamilton, the Niagara Region, London, south to Windsor. 

  Weather

  Jul 27, 2023
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• ‘Multi-day’ heat wave alert issued for much of Ontario

  Environment Canada has issued a “multi-day” heat wave alert expected to continue until Thursday for most of Ontario, including the Greater Toronto Area.

  Weather

  Jul 4, 2023
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• Longest stretch of summer-like weather so far this year for southern Ontario on the way

  The longest stretch of summer-like weather so far this year for southern Ontario is on the way. Here's a look at what's expected and when it will begin.

  Weather

  May 25, 2023