PADD 4 diesel price (Rocky Mountain) in September 2025
5 official EIA weekly readings
- The average PADD 4 (Rocky Mountain) on-highway diesel price in September 2025 was $3.742 per gallon, calculated from 5 EIA weekly readings.
- The weekly low was $3.722; the weekly high was $3.754.
- That monthly average was $0.026 lower than August 2025.
- It was $0.149 higher than September 2024.
This is a calendar-month view of the official EIA weekly Rocky Mountain series. It averages only the source weeks listed below, not a separate government monthly estimate.
September 2025 weekly chart
Every EIA week in September 2025
| Week of | $/gal | Change |
|---|---|---|
| $3.753 | ▲+$0.005 | |
| $3.754 | ▲+$0.001 | |
| $3.722 | ▼−$0.032 | |
| $3.747 | ▲+$0.025 | |
| $3.732 | ▼−$0.015 |
← August 2025 · October 2025 → · all of 2025 · all Rocky Mountain history · monthly CSV
Download the underlying weekly EIA series or see the methodology and source cross-check.