Based on 4,320 research-grade iNaturalist observations in Illinois, Painted Lady is most often recorded in September; in Illinois it behaves like a seasonal. It ranks #9 among butterflies recorded in the state in our data.
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Painted Lady in Illinois by month
Bars show research-grade observations per month. They mix true seasonality with how often people are outdoors, so treat small numbers with caution.
Also seen in Illinois in September
Monarch
Common Buckeye
Fiery Skipper
Silver-spotted Skipper
Black Swallowtail
Pearl Crescent
Small White
Orange Sulphur
Places to look in Illinois
State ParkCahokia
Botanical GardenMorton Arboretum
National ForestShawnee National Forest
Botanical GardenChicago Botanic Garden
Botanical GardenLadd Arboretum
State ParkStarved Rock State Park
FAQ
When does Painted Lady appear in Illinois?
Mainly August–October, with the most records in September.
How common is Painted Lady in Illinois?
It ranks #9 by number of iNaturalist observations among butterflies in Illinois (4,320 records in our sample).