PADD 4 diesel price (Rocky Mountain) in October 2026
3 official EIA weekly readings available so far
- The average PADD 4 (Rocky Mountain) on-highway diesel price in October 2026 was $6.330 per gallon, calculated from 3 EIA weekly readings available so far.
- The weekly low was $6.267; the weekly high was $6.422.
- That monthly average was $0.176 higher than September 2026.
- It was $2.680 higher than October 2025.
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.
October 2026 weekly chart
Every EIA week in October 2026
| Week of | $/gal | Change |
|---|---|---|
| $6.267 | ▼−$0.140 | |
| $6.302 | ▲+$0.035 | |
| $6.422 | ▲+$0.120 |
← September 2026 · all of 2026 · all Rocky Mountain history · monthly CSV
Download the underlying weekly EIA series or see the methodology and source cross-check.