Diesel price in September 2026
U.S. EIA weekly diesel averaged $6.126/gal over 2 readings so far
- The average U.S. on-highway diesel price in September 2026 was $6.126 per gallon, calculated from 2 EIA weekly readings available so far.
- The weekly low was $5.967; the weekly high was $6.285.
- That monthly average was $0.664 higher than August 2026.
- It was $2.378 higher than September 2025.
This page is a simple calendar-month view of the official EIA weekly U.S. on-highway diesel series: it averages the survey weeks listed below. It is not a separate government monthly series, and no missing weeks are estimated.
September 2026 weekly chart
Every EIA week in September 2026
| Week of | $/gal | Change |
|---|---|---|
| $5.967 | ▲+$0.368 | |
| $6.285 | ▲+$0.318 |
← August 2026 · all of 2026 · all months and years · monthly CSV
The source series is the EIA weekly U.S. on-highway diesel price, published by survey Monday. See the methodology and download the underlying weekly CSV.