
Based on 12,048 research-grade iNaturalist observations in Minnesota, Monarch is most often recorded in August; in Minnesota it behaves like a summer visitor / breeder. It ranks #1 among butterflies recorded in the state in our data.
Danaus plexippus
Monarch in Minnesota 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 Minnesota in August

Eastern Tiger Swallowtail

Peck's Skipper

Painted Lady

Black Swallowtail

Small White

Least Skipper

Eastern Tailed-Blue

Viceroy
Places to look in Minnesota
Chippewa National Forest
University of Minnesota Landscape Arboretum
Itasca State Park
Judge C. R. Magney State Park
Superior National Forest
Flandrau State Park
FAQ
When does Monarch appear in Minnesota?
Mainly June–September, with the most records in August.
How common is Monarch in Minnesota?
It ranks #1 by number of iNaturalist observations among butterflies in Minnesota (12,048 records in our sample).