Umpqua Bank ← View details 257 East Main Street, Dayton, WA 99328 +1 509-382-2557 umpquabank.com Suggest an Edit Name* State* Locality* ZIP* Street address* Phone* Website Opening hours Monday: 10:00 am — 04:00 pm Tuesday: 10:00 am — 04:00 pm Wednesday: 10:00 am — 04:00 pm Thursday: 10:00 am — 04:00 pm Friday: 10:00 am — 04:00 pm Your comments * — Required information