In its newest quick time period vitality outlook (STEO), which was launched on Could 12, the Vitality Info Administration (EIA) projected that the U.S. on-highway diesel gasoline worth will common $4.76 per gallon in 2026.
This marks a slight lower from the 2026 U.S. on-highway diesel gasoline worth forecast within the EIA’s earlier STEO, which was launched in April. In that STEO, the EIA noticed the gasoline averaging $4.80 per gallon this 12 months.
A quarterly breakdown included within the EIA’s Could STEO projected that the on-highway diesel gasoline worth will common $5.36 per gallon within the second quarter of this 12 months, $4.94 per gallon within the third quarter, and $4.73 per gallon within the fourth quarter. In its earlier STEO, the EIA projected that the gasoline would common $5.61 per gallon within the second quarter of this 12 months, $5.00 per gallon within the third quarter, and $4.59 per gallon within the fourth quarter.
Each STEOs confirmed that the gasoline averaged $4.06 per gallon within the first quarter of this 12 months and $3.66 per gallon total in 2025.
Based on the AAA Gasoline Costs web site, the common U.S. diesel worth is $5.656 per gallon, as of Could 21. Yesterday’s common was $5.652 per gallon, the week in the past common was $5.667 per gallon, the month in the past common was $5.511 per gallon, and the 12 months in the past common was $3.554 per gallon, the positioning confirmed.
The very best recorded common worth of diesel within the U.S. was seen on June 19, 2022, at $5.816 per gallon, the positioning outlined.
The EIA’s newest diesel gasoline replace, which was launched on Could 19, confirmed a latest declining worth pattern for U.S. on-highway diesel gasoline. Based on this replace, the gasoline worth averaged $5.640 per gallon on Could 4, $5.639 per gallon on Could 11, and $5.596 per gallon on Could 18.
Though the EIA’s diesel gasoline replace outlined a latest worth drop, it nonetheless highlighted that the Could 18 worth was $1.807 increased than the worth two years in the past, and $2.060 increased than the 12 months in the past worth.
Of the 5 Petroleum Administration for Protection District (PADD) areas highlighted within the EIA’s newest gasoline replace, the West Coast was proven to have the best on-highway diesel gasoline worth as of Could 18, at $6.524 per gallon. The Gulf Coast was proven within the replace to have the bottom on-highway diesel gasoline worth as of Could 18, at $5.122 per gallon.
A glossary part of the EIA website notes that the 50 U.S. states and the District of Columbia are divided into 5 districts, with PADD 1 additional cut up into three subdistricts. PADDs 6 and seven embody U.S. territories, the positioning provides.
In a weblog posted on its web site on Monday, GasBuddy famous that the nationwide common worth of diesel fell 0.5 cents within the final week and outlined that it stood at $5.618 per gallon.
Based on this weblog, the most typical U.S. diesel worth stood at $4.99 per gallon, “unchanged from final week”. This was adopted by $4.89 per gallon, $4.79 per gallon, $4.85 per gallon, and $4.95 per gallon, the weblog revealed.
The median U.S. diesel worth stood at $5.49 per gallon, the weblog highlighted, noting that was additionally “unchanged from final week and about 13 cents decrease than the nationwide common”.
Diesel costs on the prime 10 p.c of stations within the nation averaged $6.45 per gallon and the underside 10 p.c averaged $4.78 per gallon, the weblog famous, including that the states with the bottom common diesel costs comprised Texas, at $4.96 per gallon, Louisiana, at $5.02 per gallon, and Mississippi, at $5.04 per gallon.
The states with the best common diesel costs have been California, at $7.40 per gallon, Hawaii, at $7.21 per gallon, and Washington, at $6.78 per gallon, in keeping with the weblog, which outlined that the states that noticed the most important weekly adjustments have been Colorado, which skilled a 25.4 cent improve, Michigan, which noticed a 17.6 cent improve, and Ohio, which noticed a 16.1 cent improve.
In its newest gasoline replace, which pegged the diesel retail worth at $3.72 per gallon in February, the EIA outlined that 41 p.c of that complete went in direction of crude oil prices, 23 p.c went in direction of refining prices, 21 p.c went towards distribution and advertising and marketing prices, and 16 p.c went in direction of taxes.
“With international oil inventories persevering with to pattern towards traditionally tight ranges, markets stay extraordinarily delicate to geopolitical developments and potential provide disruptions,” Patrick De Haan, head of petroleum evaluation at GasBuddy, mentioned within the firm’s weblog.
“Consequently, gasoline and diesel costs are prone to stay unstable, and with Memorial Day approaching, any sustained improve in oil costs might start pushing retail gasoline costs increased once more within the weeks forward,” he warned.
In a maternal healthcare occasion hosted within the White Home Oval Workplace on Could 12, which was streamed reside on the White Home YouTube web page, U.S. President Donald Trump mentioned, “as quickly as that is over with Iran … you’re going to see gasoline and oil drop like a rock”.
To contact the writer, e mail andreas.exarheas@rigzone.com

