California diesel price in March 2026
5 official EIA weekly readings
- The average California on-highway diesel price in March 2026 was $6.321 per gallon, calculated from 5 EIA weekly readings.
- The weekly low was $4.990; the weekly high was $7.219.
- That monthly average was $1.451 higher than February 2026.
- It was $1.526 higher than March 2025.
This is a calendar-month view of the official EIA weekly California 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 |
|---|---|---|
| $4.990 | ▲+$0.046 | |
| $6.096 | ▲+$1.106 | |
| $6.428 | ▲+$0.332 | |
| $6.870 | ▲+$0.442 | |
| $7.219 | ▲+$0.349 |
← February 2026 · April 2026 → · all of 2026 · all California history · monthly CSV
Download the underlying weekly EIA series or see the methodology and source cross-check.