Based on 1,130 research-grade iNaturalist observations in Indiana, Groundhog is most often recorded in May; in Indiana it behaves like a summer visitor / breeder. It ranks #8 among mammals recorded in the state in our data.
Marmota monax
Groundhog in Indiana 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 Indiana in May
Eastern Cottontail
Eastern Fox Squirrel
White-tailed Deer
Eastern Chipmunk
Common Raccoon
Eastern Gray Squirrel
American Red Squirrel
Virginia Opossum
Places to look in Indiana
State ParkTurkey Run State Park
State ParkBrown County State Park
State ParkProphetstown State Park
National ForestHoosier National Forest
State ParkMounds State Park
State ParkFalls of the Ohio State Park
FAQ
When does Groundhog appear in Indiana?
Mainly April–October, with the most records in May.
How common is Groundhog in Indiana?
It ranks #8 by number of iNaturalist observations among mammals in Indiana (1,130 records in our sample).