
Based on 2,907 research-grade iNaturalist observations in Wisconsin, Small White is most often recorded in August; in Wisconsin it behaves like a summer visitor / breeder. It ranks #2 among butterflies recorded in the state in our data.
Pieris rapae
Small White in Wisconsin 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 Wisconsin in August

Monarch

Eastern Tiger Swallowtail

Silver-spotted Skipper

Black Swallowtail

Eastern Giant Swallowtail

Peck's Skipper

Great Spangled Fritillary

Eastern Tailed-Blue
Places to look in Wisconsin
Aztalan State Park
Wyalusing State Park
Chequamegon–Nicolet National Forest
Merrick State Park
Perrot State Park
Lake Kegonsa State Park
FAQ
When does Small White appear in Wisconsin?
Mainly June–September, with the most records in August.
How common is Small White in Wisconsin?
It ranks #2 by number of iNaturalist observations among butterflies in Wisconsin (2,907 records in our sample).