Butterfly flight seasons in Montana from 14,340 research-grade iNaturalist observations. July has the most activity.
By month
Montana butterfly calendar (top 40)
Fewer More observations (relative to each row's peak month)
Activity by month (all species)
Most-photographed butterflies in Montana
California Tortoiseshell
Mourning Cloak
Lorquin's Admiral
Essex Skipper
Common Wood-Nymph
Green Comma
Milbert's Tortoiseshell
Painted Lady
Field Crescent
Small White
Mormon Fritillary
Boisduval's Blue
Two-tailed Swallowtail
Woodland Skipper
Western Tiger Swallowtail
Satyr Comma
Where to photograph butterflies in Montana
State ParkMakoshika State Park
State ParkMadison Buffalo Jump State Park
State ParkMedicine Rocks State Park
State ParkMissouri Headwaters State Park
State ParkFirst Peoples Buffalo Jump State Park
State ParkGreycliff Prairie Dog Town State Park
State ParkBlack Sandy State Park
State ParkTongue River Reservoir State Park