Based on 3,195 research-grade iNaturalist observations in Washington, Western Tiger Swallowtail is most often recorded in June; in Washington it behaves like a summer visitor / breeder. It ranks #2 among butterflies recorded in the state in our data.
Papilio rutulus
Western Tiger Swallowtail 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 June
Lorquin's Admiral
Pale Swallowtail
Small White
Clodius Parnassian
Boisduval's Blue
Snowberry Checkerspot
Painted Lady
California Tortoiseshell
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 Western Tiger Swallowtail appear in Washington?
Mainly June–July, with the most records in June.
How common is Western Tiger Swallowtail in Washington?
It ranks #2 by number of iNaturalist observations among butterflies in Washington (3,195 records in our sample).