Butterfly flight seasons in Washington from 53,405 research-grade iNaturalist observations. July has the most activity.
By month
Washington butterfly calendar (top 40)
Fewer More observations (relative to each row's peak month)
Activity by month (all species)
Most-photographed butterflies in Washington
Woodland Skipper
Western Tiger Swallowtail
Lorquin's Admiral
Small White
California Tortoiseshell
Echo Azure
Painted Lady
Pale Swallowtail
Snowberry Checkerspot
Boisduval's Blue
Clodius Parnassian
Red Admiral
Anise Swallowtail
Anna's Blue
Satyr Comma
Edith's Checkerspot
