# Rocky Mountain (PADD 4) vs the US average -4.4 cents/gal vs the US average for the week of Aug 31, 2026. Positive means Rocky Mountain pays over the national number. _Data through Aug 31, 2026 · source last checked Sep 1, 2026 · page revised Sep 1, 2026_ > Rocky Mountain pays 4.4 cents/gal under the US average this week. The gap is 7.1 cents wider than a week ago. Rocky Mountain is 4.4 cents/gal under the US average for the week of Aug 31, a 7.1-cent improvement from a week ago. A year ago the region was 1.9 cents/gal over the national number. ## The numbers | Period | Gap | Week of | | --- | --- | --- | | This week | -4.4 cents/gal | Aug 31, 2026 | | A week ago | -11.5 cents/gal | Aug 24, 2026 | | 4 weeks ago | -6.3 cents/gal | Aug 3, 2026 | | A year ago | +1.9 cents/gal | Sep 1, 2025 | ## About this data - Source: Derived from EIA weekly on-highway diesel survey - Series: Rocky Mountain (PADD 4) vs the US average - Basis: Region pump price minus the US average - Unit: cents/gal - Calculation period: Weekly (survey week) - Last observation: Aug 31, 2026 - Update frequency: Weekly --- Cite: Rocky Mountain (PADD 4) vs the US average: -4.4 cents/gal for the week of Aug 31, 2026. Monday Diesel. https://mondaydiesel.com/spreads/rocky-mountain Canonical URL: https://mondaydiesel.com/spreads/rocky-mountain