Based on 3,383 research-grade iNaturalist observations in Washington, Hoary Marmot is most often recorded in August; in Washington it behaves like a summer visitor / breeder. It ranks #5 among mammals recorded in the state in our data.
Marmota caligata
Hoary Marmot in Washington 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 Washington in August
Cascade Golden-mantled Ground Squirrel
Douglas's Squirrel
American Pika
Eastern Cottontail
Eastern Gray Squirrel
Mountain Goat
American Black Bear
Harbor Seal
Places to look in Washington
National ForestGifford Pinchot National Forest
National ForestOlympic National Forest
State ParkPeace Arch Park
National ForestColville National Forest
National ForestMount Baker–Snoqualmie National Forest
Botanical GardenBellevue Botanical Garden
FAQ
When does Hoary Marmot appear in Washington?
Mainly July–September, with the most records in August.
How common is Hoary Marmot in Washington?
It ranks #5 by number of iNaturalist observations among mammals in Washington (3,383 records in our sample).