West Coast less California diesel price in May 2026
4 official EIA weekly readings
- The average West Coast less California on-highway diesel price in May 2026 was $5.934 per gallon, calculated from 4 EIA weekly readings.
- The weekly low was $5.905; the weekly high was $6.000.
- That monthly average was $0.187 lower than April 2026.
- It was $2.165 higher than May 2025.
This is a calendar-month view of the official EIA weekly West Coast less California series. It averages only the source weeks listed below, not a separate government monthly estimate.
May 2026 weekly chart
Every EIA week in May 2026
| Week of | $/gal | Change |
|---|---|---|
| $6.000 | ▲+$0.074 | |
| $5.905 | ▼−$0.095 | |
| $5.920 | ▲+$0.015 | |
| $5.909 | ▼−$0.011 |
← April 2026 · June 2026 → · all of 2026 · all West Coast less California history · monthly CSV
Download the underlying weekly EIA series or see the methodology and source cross-check.