Based on 4,944 research-grade iNaturalist observations in Pennsylvania, Groundhog is most often recorded in June; in Pennsylvania it behaves like a summer visitor / breeder. It ranks #5 among mammals recorded in the state in our data.
Marmota monax
Groundhog in Pennsylvania 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 Pennsylvania in June
White-tailed Deer
Eastern Cottontail
Eastern Chipmunk
Eastern Gray Squirrel
Common Raccoon
Red Fox
American Black Bear
American Red Squirrel
Places to look in Pennsylvania
National ForestAllegheny National Forest
State ParkPresque Isle State Park
Botanical GardenJenkins Arboretum
State ParkCherry Springs State Park
State ParkColton Point State Park
State ParkLeonard Harrison State Park
FAQ
When does Groundhog appear in Pennsylvania?
Mainly April–September, with the most records in June.
How common is Groundhog in Pennsylvania?
It ranks #5 by number of iNaturalist observations among mammals in Pennsylvania (4,944 records in our sample).