I understand it to be open every day from April to mid October but to be sure you might try phoning one of the nearby tourist information centers. They should know
Fort Assiniboine Tourist Information
. Tel: (780) 584-3737
Hours of operation:
June open weekends only 11:00 a.m. - 5:00 p.m.
July & August open weekends and week days
11:00 a.m. - 5:00 p.m.
Barrhead Tourist Information
Tel: (780) 674-5203
Hours of operation: May - September open from
Tuesday - Saturday 10:00 a.m. - 5:00 p.m.