Recent summer-like temperatures will drop with the arrival of a cold front on Wednesday.
Environment Canada Meteorologist Steven Flisfeder said it certainly hasn't felt like the middle of fall over the last several days.
"We've been lucky, or unlucky, depending on your perspective to have this ride of high pressure," said Flisfeder. "It's really been reducing the possibility of creating cloud cover so that sun is really getting its full potential at warming the surface. We expect it to continue today (Tuesday) and unfortunately or fortunately, again depending on perspective, come to an end Wednesday."
Normal highs for the region this time of year are around 13 C.
"Our forecast for the rest of the fall is above seasonal, so we do expect temperatures to, generally speaking, be above normal to what we would typically be seeing," said Flisfeder. "Whether or not we get back into the 20s as the days and weeks go by, I can't really give a firm yes or no."
He said with the arrival of the cold front, there is also the chance of scattered showers.
"But, it is just a chance. It's very unlikely we'll see very high accumulations with that. Another chance coming through on Friday to Saturday but again, just a chance. It is going to remain on the dry side and that's going to be the same story that we've been seeing for the past couple of weeks across all of southern Ontario. It's been much, much drier than normal."
Temperatures climbed to near record highs in some parts of the province Monday.
In Sarnia, it reached 25.7 C, just shy of the record set in 2007 of 25.9 C. It got up to 25.3 C in Windsor and 23.1 C in Chatham.