With warmer than average temperatures expected over the next two weeks, timing of peak fall foliage could be delayed.

The Climate Prediction Center is forecasting warmer than average temperatures through the first week of October.

Chilly temperatures help trigger the changeover of leaves from green to brilliant colors.

Since Saturday, we’ve had temperatures in the mid-eighties, 10 and 15 degrees above average.

Leaves contain a chemical substance called chlorophyll, the substance that gives leaves their inherent green color. As the season begins to turn cold, trees begin to block the flow of water to their leaves. Without water, the chlorophyll breaks down and vibrant colors develop.

The fall weather reaches a point where the days are warm enough for the tree’s food factories to operate, but the nights are too cold for the sugars which are produced to move downward in the tree.

Historically, Connecticut’s fall foliage season begins in late September and extends through early November along the shoreline.

The 2017 and 2018 fall foliage were delayed because of warm Septembers and Octobers.

In 2017, Trumbull had to delay its leaf pickup program because the leaves have not fallen.

The state Department of Energy and Environmental Protection says peak color is estimated to be between Oct. 5 and Nov. 8. However, depending on the weather in next couple of weeks, the peak date may be adjusted a few days later as the season progresses.

Already, DEEP has been updating its foliage map that tracks the progression of leaves changing color.

Here are some projected times of peak foliage:

Oct. 3-8

In the northwest and northeast corners of the state.

Oct. 16-23

All cross the northern half of Connecticut.

Oct. 24-30

All across the southern half of state.

Oct. 31 -Nov. 6

Lingering peak foliage along the shoreline.

Connecticut Media Group