TORONTO - People swapped shorts and sandals for sweaters and slacks on Saturday after fall-like temperatures replaced days of sweltering heat in the province, but weather experts say it's not time to write the obituary on summer yet.

"It almost seems like mother nature has slammed the door shut on summer, when you consider we've gone from low to mid-thirties, to the mid to upper teens," said Environment Canada meteorologist Arnold Ashton. "It is shocking to some."

In downtown Toronto, people strolling city streets Saturday morning bundled up in light jackets as the weather hovered around 12 degrees before reaching 16 degrees later in the day at Toronto's Pearson International Airport.

It was a different scene last Sunday as a heat wave gripped Central Canada and the Maritimes.

In Ontario, so many recorders were broken, meteorologists said they were "too numerous to mention."

The mercury reached 33.7 degrees in Toronto on Tuesday.

It may explain why the slightly below normal temperatures on Saturday sent some digging out sweaters from the depths of their closet.

"We had a fairly strong cold front sweep through the area last night and that has opened the door to some cooler weather," said Ashton.

"It's the time of year when mother nature gets a little bit fickle and she throws a whole blend of weather at us," he said, adding the sudden switch in temperatures is perfectly normal this time of year.

"Kitchen sink weather, really."

David Phillips, senior climatologist for Environment Canada also said there's nothing spectacular in the sudden dip in temperatures.

"We'll see places that will have a high of 18, like in London, and typically you'd expect a high of 23 degrees," said Phillips.

The cooler temperature isn't a dramatic shift from the norm, he said.

However, when compared to a scorching summer -- the fourth warmest summer in 63 years -- it tends to surprise people.

Phillips said the cool, breezy weather is "nature's reminder" that fall is around the corner.

"More jacket weather than muscle shirt and tank top weather," cracked Phillips, before adding it's not time to "write the obituary on summer quite yet."

"It's not the final chapter. This is just kind of a little teaser."

The temperatures will make a quick turn around, and Ontario could be flirting with the 30 degree mark by Tuesday, said Ashton.

Environment Canada also expects the temperatures to be above normal for September and October.

"People are wondering and hoping that it's not the end of the summer of summers," said Phillips.