Utah drivers paid for the war with Iran before most of the country did. The state average for regular hit $4.64 in late May, the top of a climb that began the day the fighting started, February 28. As of June 13, it sits at $4.311 a gallon, per AAA, and the line is still dropping.
The federal inflation report released on June 10 caught the surge at its height. Consumer prices rose 4.2 percent over the year ending in May, the U.S. Bureau of Labor Statistics reported, the highest annual reading since April 2023. Energy accounted for more than 60 percent of the monthly increase. Gasoline rose 7 percent in a single month.
Utah feels these swings first, and harder than most. The state runs on five refineries clustered in Salt Lake and Davis counties, with a capacity of nearly 200,000 barrels a day. The Gulf Coast refines about 25 times that much. When a distant shock hits crude, Utah's small, landlocked market has little slack to absorb it. Pump prices also move based on what the next shipment will cost, not the last one, so stations raise prices on expectation alone. "Twenty percent of the world's oil supply flows through the Strait of Hormuz," GasBuddy analyst Patrick De Haan told KSL in the war's first week. The costlier fuel had not yet reached a single tank in Utah.
The cost reaches every tank. At $4.311 per gallon, a 15-gallon fill-up costs about $65 in Utah, roughly $15 more than a year ago. At the May peak it ran closer to $70.
Diesel is the number that moves the state's freight, and it climbed further. Utah diesel is $5.16 per gallon today. In mid-May, it reached $5.59, about 62 percent higher than a year earlier, on AAA data. Every load hauled out of the Salt Lake valley, every excavator on a job site, every last-mile delivery carries that line. In February, before the war, the state struck a deal with its refiners to produce 800,000 more gallons a day over five years. None of that capacity exists yet.
The relief now tracks crude. West Texas Intermediate settled at $84.88 a barrel on June 12, its lowest in nearly two months. The Center for American Progress had put it at nearly $102.68 on May 18. Brent traded around $87. Prices fell on reports that Washington and Tehran were closing in on an agreement, with a draft committing Iran to reopen the Strait of Hormuz within 30 days. Nothing is signed.
Utah is not the country's most expensive pump. California averages $5.76 a gallon, Hawaii $5.59, Washington $5.53, AAA's state table shows. What set Utah apart was the rate of the climb. Measured from the day before the war, the state posted the largest gas-price increase in the country through late April at 51.7 percent, according to CAP, ahead of Idaho and Tennessee. By May 18 it had risen about 66 percent, near the top alongside Wisconsin and Illinois. The national average is now $4.086, down for a third straight week. Utah runs about 22 cents above it.
The 4.2 percent inflation figure measures May, near the peak. June's decline will not be reflected in federal data until the next CPI report, on July 14. The pump got there first.
