Based on 14,403 research-grade iNaturalist observations in Pennsylvania, Eastern Gray Squirrel is most often recorded in September; in Pennsylvania it behaves like a year-round resident. It ranks #2 among mammals recorded in the state in our data.
Sciurus carolinensis
Eastern Gray Squirrel 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 September
White-tailed Deer
Eastern Chipmunk
Eastern Cottontail
Groundhog
Common Raccoon
Domestic Cat
Red Fox
Northern Short-tailed Shrew
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 Eastern Gray Squirrel appear in Pennsylvania?
Mainly September–July, with the most records in September.
How common is Eastern Gray Squirrel in Pennsylvania?
It ranks #2 by number of iNaturalist observations among mammals in Pennsylvania (14,403 records in our sample).