When to VisitWhitman Mission National Historical Site has seasonal hours. Please see the details, below.
Summer HoursFrom Memorial Day Weekend, through Labor Day Weekend:
Trails: Open daily from 8:00 am - 4:30 pm.
Visitor Center: Open Daily 9:00 am – 4:00 pm.
Note: Open Memorial Day, July 4th and Labor Day.
Winter HoursAfter Labor Day Weekend and ends before Memorial Day
Visitor Center: Open Wednesday thru Sunday from 9:00 am to 4:00 pm.
Important Notes: The Visitor Center is closed December and January.
Additionally, the Site,Trails, and Visitor Center are closed on Federal Holidays in winter.