Based on 1,257 research-grade iNaturalist observations in Montana, Common Golden-mantled Ground Squirrel is most often recorded in July; in Montana it behaves like a summer visitor / breeder. It ranks #11 among mammals recorded in the state in our data.
Callospermophilus lateralis
Common Golden-mantled Ground Squirrel in Montana 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 Montana in July

Mountain Goat

Columbian Ground Squirrel

Bighorn Sheep

White-tailed Deer

Hoary Marmot

Mule Deer
American Black Bear
Moose
Places to look in Montana
National ForestBitterroot National Forest
Makoshika State Park
National ForestBeaverhead–Deerlodge National Forest
Lewis and Clark National Forest
Helena National Forest
Madison Buffalo Jump State Park
FAQ
When does Common Golden-mantled Ground Squirrel appear in Montana?
Mainly June–August, with the most records in July.
How common is Common Golden-mantled Ground Squirrel in Montana?
It ranks #11 by number of iNaturalist observations among mammals in Montana (1,257 records in our sample).