Please complete your profile to unlock commenting and other important features.

Please select your date of birth for special perks on your birthday. Your username will be your unique profile link and will be publicly used in comments.
Narcity Pro

This is a Pro feature.

Time to level up your local game with Narcity Pro.

Pro

$5/month

$40/year

  • Everything in the Free plan
  • Ad-free reading and browsing
  • Unlimited access to all content including AI summaries
  • Directly support our local and national reporting and become a Patron
  • Cancel anytime.
For Pro members only Pro
Summary

Ontario's Weather Could See An All-Time High This Week Before An Extreme Temperature Drop

What season is it again?

Lake Ontario with the Toronto skyline in the distance.

Lake Ontario with the Toronto skyline in the distance.

Senior Writer

Ontario's weather is going to get seriously wild this week and you'll need both your spring jacket and your parka on hand.

According to The Weather Network, the first half of the week could get close to the record highs for February.

"A typical February in Toronto struggles to hit the double-digits just once," says TWN. "This year, though, we’re on track to see our sixth and seventh days reach 10°C or warmer."

For Monday, London and Windsor could see temperatures as high as 11 C, and on Tuesday, it's going to get even warmer across southern and eastern Ontario with some areas expected to get numbers into the mid-teens — in fact, Brockville and Cornwall could see temperatures as high as 17 C.

"We’re closely watching eastern Ontario for potential all-time February heat records," notes the agency. "Ottawa's warmest February temperature was a balmy 12.4°C day back in 2000."

Things are going to take a serious turn midweek.

"A dramatic cold front sliding out of northern Ontario will kick off a truly impressive temperature swing heading into Wednesday night," notes TWN. "This will be one of the most extreme temperature drops we’ve seen in recent memory, so forecasters will monitor the risk of a flash freeze."

While Ottawa is going to see a high of 13 C on Wednesday, that's going to turn into -13 C by the next morning.

"Precipitation will quickly change over to snow across southern Ontario as the frigid air takes hold Wednesday night into Thursday. Areas that saw a chance for thunderstorms on Wednesday will see the opportunity for lake-effect snow by Thursday."

Thankfully, the cold won't last for too long and temps are supposed to "quickly rebound" for next week.

This article's cover image was used for illustrative purposes only.

Explore this list   👀

    • Senior Writer

      Sarah Rohoman (she/her) was a Senior Writer with Narcity Media. She has worked at BuzzFeed Canada, Yahoo Canada, and CBC Radio in news, lifestyle, ecommerce, and social media. She has an MA in Journalism from Western University and a BA from McGill. She loves libraries, alpacas, and all things witchy.

    Toronto's weather will feel like fall this week with temps dropping 20 C compared to 2024

    Toronto's weather is serving up a chilly blast from the past. 😔

    This enchanting small town set on a BC island was named among North America's 'most peaceful'

    Sandy beaches, ancient forests and a cozy town — anyone?. 🌲

    This Ontario gem with waterfront towns and beaches is one of Canada's 'best' spots to live

    It has "large" homes "priced much lower" than major Canadian cities.

    New data reveals the 'most peaceful' places to live and Canadian towns demolished US ones

    Five Canadian towns were named the most serene on the continent. 🍁