As the week progresses, the weather models indicate a strong cold front is expected to drop down from Canada, and by Oct. 18, we could have highs in the 40s and lows in the 20s.  

That kind of weather would get our leaves to change color quickly.

 Mid- to late-October should bring the most beautiful time of our autumn tree colors. The conditions that make for spectacular autumn color displays are a moist growing season followed by a dry autumn with warm, sunny days and cool but not freezing nights.

In the fall, because of changes in the length of daylight and changes in temperature, the leaves stop their food-making process. The chlorophyll breaks down, the green color disappears, the yellow-to-orange colors become visible and give the leaves part of their fall splendor. 

Generally the most colorful trees in the fall are any type of maple, along with dogwood, oak and sumac, but we have many other beautiful varieties in the area.

Steve Norris is a weather guru. Send him an email anytime with questions or comments to

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