PADD 4 diesel price (Rocky Mountain) in March 2026
5 official EIA weekly readings
- The average PADD 4 (Rocky Mountain) on-highway diesel price in March 2026 was $4.675 per gallon, calculated from 5 EIA weekly readings.
- The weekly low was $3.737; the weekly high was $5.270.
- That monthly average was $1.113 higher than February 2026.
- It was $1.244 higher than March 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.
March 2026 weekly chart
Every EIA week in March 2026
| Week of | $/gal | Change |
|---|---|---|
| $3.737 | ▲+$0.054 | |
| $4.397 | ▲+$0.660 | |
| $4.796 | ▲+$0.399 | |
| $5.174 | ▲+$0.378 | |
| $5.270 | ▲+$0.096 |
← February 2026 · April 2026 → · all of 2026 · all Rocky Mountain history · monthly CSV
Download the underlying weekly EIA series or see the methodology and source cross-check.