When’s the best time to see fall colors in Illinois from Rockford to Carbondale

When it comes to fall colors, Illinois stretches the season longer than most states, with colors starting in northern Illinois in late September and peaking in the south well into November.

Each year, websites like SmokyMountains.com publish a fall foliage prediction map that shows stages such as patchy, partial, near-peak, peak, and past-peak across the country. While the map is focused primarily on the eastern U.S. and regions like the Smoky Mountains, it also provides a helpful nationwide context and visual timeline for seasonal leaf change.

Here’s what the fall color timeline looks like across Illinois.

Northern Illinois: Late September to mid-October

If you live near Chicago, Rockford, or the Galena area, you’ll see the first hints of color before the rest of the state. Leaves in northern Illinois usually begin to change by the third or fourth week of September.

The peak display arrives around the second or third week of October. Popular spots include Starved Rock State Park, Matthiessen State Park, Rock Cut State Park, and the Great River Road, which runs along the Mississippi.

Central Illinois: Early to Late October

In the heart of the state, from Springfield to Peoria and Champaign, trees hold their green a little longer. Color typically starts to appear in the first half of October.

By the middle to late part of the month, central Illinois hits its stride.

City parks, forest preserves, and stretches of rural highway all light up. Spots such as Allerton Park near Monticello and the Sangamon River Valley as reliable fall color destinations.

Southern Illinois: Late October to Early November

Farther south, warm temperatures delay the season. Expect to see changes beginning in the last two weeks of October, with the best colors holding into early November.

In Southern Illinois, you’ll find some of the most memorable fall backdrops in the state. Rock formations at Shawnee National Forest’s Garden of the Gods and the bluffs of Giant City State Park provide great viewing points.

What to Wear

Packing smart can make your fall color adventure more comfortable. Mornings in Illinois can be chilly, while afternoons often warm up quickly. A light jacket or fleece paired with a long-sleeve shirt gives you flexibility. Comfortable walking shoes or hiking boots are important if you plan to explore trails in parks. Packing items such as hats, gloves, and even a scarf can come in handy if temperatures drop, especially on bluffs and overlooks where the wind picks up.

Planning Your Visit

From late September in the north to early November in the south, Illinois delivers a long season of color worth exploring. The good news is that Illinois offers a six- to eight-week window for watching the fall colors. If you miss the show in one part of the state, you can always head a little farther south and catch it there.

Jack Ivanic is a freelance contributor to the Rockford Register Star.