Montana Diesel prices, liter

We show diesel price data for Montana from 29-Jun-2026 to 05-Oct-2026. The average diesel price during that period is 1.43 per liter with a minimum of 1.18 on 06-Jul-2026 and a maximum of 1.68 on 28-Sep-2026. Our data are obtained from official government sources, regulatory agencies, petroleum companies, and major media sources. We update the series for Montana every week.