Washington Gasoline prices, liter

We show Octane-95 gasoline price data for Washington from 20-Jul-2026 to 26-Oct-2026. The average gasoline price during that period is 1.47 per liter with a minimum of 1.37 on 20-Jul-2026 and a maximum of 1.54 on 14-Sep-2026. Our data are obtained from official government sources, regulatory agencies, petroleum companies, and major media sources. We update the series for Washington every week.