Don't let these high temperatures fool you, Monday marks the first day of Fall. 

The prolonged Summer weather could delay Fall foliage. 

Jose Barbosa, associate professor in Biology, Geology & Environmental Sciences at UTC, said several stages will need to happen for the leaves to start changing colors. 

"The conditions are about to start which is reducing the day length and also the lowering of temperature, those are the two factors that are fundamental for the color change," Barbosa said. 

He said by mid-October we should start to see these changes. 

But the high temperatures make the exact date unpredictable. 

"We have been having abnormal high temperatures at this time," Barbosa said. "We are almost getting close to the Fall season and we had a 100-degree temperature a couple of days ago so this may cause some delay in the moment you see the changes in the color."