Based on 1,827 research-grade iNaturalist observations in Oklahoma, Gray Hairstreak is most often recorded in September; in Oklahoma it behaves like a summer visitor / breeder. It ranks #9 among butterflies recorded in the state in our data.
Strymon melinus
Gray Hairstreak in Oklahoma 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 Oklahoma in September
Monarch
Gulf Fritillary
Hackberry Emperor
Huron Skipper
Pipevine Swallowtail
Fiery Skipper
Common Buckeye
Variegated Fritillary
Places to look in Oklahoma
State ParkAlabaster Caverns State Park
State ParkRobbers Cave State Park
State ParkNatural Falls State Park
National ForestOzark–St. Francis National Forest
National Wildlife RefugeWichita Mountains Wildlife Refuge
State ParkBoiling Springs State Park
FAQ
When does Gray Hairstreak appear in Oklahoma?
Mainly April–October, with the most records in September.
How common is Gray Hairstreak in Oklahoma?
It ranks #9 by number of iNaturalist observations among butterflies in Oklahoma (1,827 records in our sample).