When will Kentucky see peak fall leaf color? Will they be vibrant? Here’s the outlook
One of Lexington’s warmest summers on record is finally giving way to autumn temperatures and weather, though according to early outlooks from the Climate Prediction Center, Central Kentucky has a fair chance of seeing above-normal temperatures into October.
Much of Kentucky is experiencing either drought or abnormally dry conditions recently, parts of Fayette County included, the latest data from the U.S. Drought Monitor indicates.
You may be wondering if this will affect the beautiful fall colors residents in and around Lexington enjoy each year and whether we might see delayed peak fall foliage. Here’s what leaf peepers can look forward to this year, along with a breakdown of what makes fantastic fall colors.
Why do the leaves of trees change color in the fall?
The brilliant fall colors we see trees put on display each autumn are the result of several factors lining up just right.
As explained by the U.S. Forest Service, they include:
- Shortening length of day: If you’re a tree, this is the most influential factor because it is the most reliable and constant. Shorter days and less intense sunlight signal to the tree it should begin preparing for winter.
- Weather conditions: Particularly, temperature and moisture. If these variables are where they should be, it makes for a more vibrant and timely fall. Drought during the year can delay the arrival of fall colors, and even when the leaves change, they’ll be more muted and dull. Additionally, a series of warm, sunny days, followed by cool (but not freezing nights) generally make for more spectacular autumn displays.
- The leaf pigments themselves: The three main pigments involved in the process are chlorophyll (green), carotenoids (yellow and orange) and anthocyanins (red and purple). As the days shorten and chlorophyll breaks down, carotenoids become more visible. Anthocyanins are often produced in response to cool nights and trapped sugars, giving some leaves their striking red and purple hues.
Will Kentucky see ideal conditions for fall foliage in 2024?
Two of the most influential factors for varied and vibrant fall foliage are temperature and moisture.
Looking at temperature, many parts of the commonwealth have experienced above-normal temperature highs so far this summer, along with below normal precipitation, a National Weather Service seasonal summary shows. Lexington itself has seen its sixth warmest summer on record.
The latest update from the U.S. Drought Monitor, as of Sept. 10, indicates the Midwest continues to deal with a persistent drought, Kentucky included.
“Many areas of the Midwest are now in abnormally dry or worse conditions. Kentucky, eastern Missouri, southern Illinois, southern and eastern Indiana and western Ohio all saw one-category expansions, especially moderate drought,” the report states.
It remains to be seen whether these factors will persist as they are and what effect they’ll have on fall foliage in Kentucky this year. However, these conditions don’t typically make for the exceptional fall colors you might be wishing for.
When is peak fall foliage in Kentucky in 2024?
Here’s what the Smoky Mountains outlook shows for Kentucky through September, October and early November:
Sept. 30 – Most of Kentucky, including its eastern, central and western regions, won’t see leaf color change until this date. Even then, it will be minimal, according to the outlook. The southern and far western parts of the state won’t see change until later, which makes sense given these are the low-lying areas of Kentucky.
Oct. 7 - By now, all of Kentucky should be seeing its first noticeable change in fall foliage with the state divided between “patchy” and minimal change, according to the Smoky Mountains outlook. The first fiery bursts of fall color should be noticeable by this date in a rough outline around Owensboro, Elizabethtown, Louisville, Covington, Lexington, Pikeville and London. The most southern and western parts of the state, in Bowling Green and Paducah, should only see minimal change at this point.
Oct. 14 - By this point, most of the state is blanketed in fall colors, the forecast projects. From Owensboro to Pikeville and London to Covington, there’s at least partial fall foliage, meaning a significant portion of trees are showing color, but there’s still a mix of green and fall colors. A strip of land that runs along the far western and southern half of the state is seeing patchy leaf change.
Oct. 21 - The best time for that Sunday afternoon drive or weekend nature walk is around this date, with most of the state displaying near peak fall colors. The southern and far western parts of Kentucky aren’t far behind.
Oct. 28 - Just a few days before Halloween, fall foliage has reached its seasonal peak across most of Kentucky, more specifically between Owensboro and Pikeville, from London to Covington.
Nov. 4 - For people who missed the chance to see peak fall foliage in the Bluegrass State, there’s a second and final opportunity to experience it in the southern half of the state that runs along the Tennessee border. Most of the state is past its seasonal peak at this point, however.
Nov. 11 - By mid-November, all of Kentucky has surpassed peak fall foliage and most trees are dropping their leaves at this point.
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