Based on 1,164 research-grade iNaturalist observations in Wisconsin, Groundhog is most often recorded in July; in Wisconsin it behaves like a summer visitor / breeder. It ranks #10 among mammals recorded in the state in our data.
Marmota monax
Groundhog 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 July
White-tailed Deer
Eastern Cottontail
Eastern Chipmunk
Eastern Gray Squirrel
Thirteen-lined Ground Squirrel
American Red Squirrel
Common Raccoon
Muskrat
Places to look in Wisconsin
State ParkAztalan State Park
State ParkWyalusing State Park
National ForestChequamegon–Nicolet National Forest
State ParkMerrick State Park
State ParkPerrot State Park
State ParkLake Kegonsa State Park
FAQ
When does Groundhog appear in Wisconsin?
Mainly April–September, with the most records in July.
How common is Groundhog in Wisconsin?
It ranks #10 by number of iNaturalist observations among mammals in Wisconsin (1,164 records in our sample).