Toronto temperatures are going to swing by 18 C next week

October weather has started off on a pleasant and mild note, but temperatures in Toronto will finally start to drop next week and hover dangerously close to the freezing mark as we inch closer to spooky season. 

According to Environment Canada's seven-day forecast, ideal temperatures will persist throughout the upcoming weekend, with a high of 19 C on Saturday and 20 C on Sunday. 

Although the weekend is expected to kick off with sunny conditions, Sunday will bring a chance of showers throughout the day and into the evening. On Monday, conditions will remain cloudy, but we'll be treated to a high of 22 C. 

Toronto's seven-day forecast. Source: Environment Canada. 

The first indication of the temperature swing will come overnight on Monday, when the mercury will drop considerably to 10 C. More rain is expected on Tuesday, when Toronto is set to see a high of 18 C and an overnight low of just 6 C. 

Temperatures will start to slide further on Wednesday, when the daytime high of 15 C will drop to a chilly nighttime low of 4 C, for a massive temperature swing of 18 C between Monday and Wednesday night. 

Although temperatures are slowly but surely dipping, a new forecast suggests Toronto may be in for an extended fall and its "mildest winter in years" thanks to a firmly established climate pattern called El Niño, expected to persist through February 2027. 

As part of its winter sneak peek, The Weather Network reported that Canada's long-range outlook suggests it could be headed for one of the warmest starts to its winter season on record. 

In Ontario, models suggest December could feel more like an "extended fall" than the true start of winter, with temperatures expected to run well above normal averages. 

Although the region won't be exempt from classic winter storms and cold snaps, the forecast suggests that these events are likely to be short-lived. 

So, while you might have to pull out your winter parkas soon, there's a good chance you'll be trading them in and out with your fall jackets as the season continues to progress.