Diesel Prices Are Breaking Records Across Multiple States, And Relief May Not Come in 2026

On Tuesday, President Trump stated that high gasoline prices are a “very small price to pay” for the ongoing war with Iran, arguing they are necessary to prevent Iran from obtaining a nuclear weapon. He predicted prices will “come crashing down” once the war ends. But for farmers and ranchers, diesel prices have risen more than gas, putting a further strain on already high input costs for 2026.

To start the week, diesel prices went on another run with the national average diesel price is just 20 cents away from reaching a new all-time high. And across the country, a growing number of states aren’t waiting to get there. About six states are already seeing the national average price of diesel reach record highs.

From the Great Lakes to the West Coast, roughly a half dozen states have already smashed previous records, as a late-April dip in prices quickly faded and a fresh surge took hold.

“Diesel now averaging about $5.65 a gallon nationally. That is only about 20 cents away from a new all-time record high,” says Patrick De Haan, head of petroleum analysis at GasBuddy. “So even though we had that short-lived break, we’re right back knocking on the door of records again.”

That “break” didn’t last long. De Haan says even though diesel prices saw a bit of a respite for April, with even prices starting to trend down in mid-April, those prices re-accelerated in the last week.

Now, the rally is showing up in state-by-state records, especially in the Midwest.

“Looking at it state by state, Great Lakes states have seen some tremendous refining issues that have really caused prices to rise dramatically,” he says. “Michigan has now set a new all-time record high for diesel over $6. Indiana is just a few tenths of a penny away from setting a new all-time record. Illinois has set a new all-time record. Wisconsin has set a new all-time record.”

And it’s not just a regional story. States in the West were some of the first to not just see the highest prices, but now also hit record levels.

“Out on the West Coast, Arizona set a record a couple of weeks ago, and Washington state is at an all-time record,” he adds. “So there are probably about a half dozen or so states that have set new all-time records, and again, the national average itself is just 20 cents away.”

Perhaps the most telling shift, though, is there’s no longer a low-price refuge.

“No states any longer have diesel averaging below $5 a gallon,” De Haan says. “Texas was the last holdout, and it now is above $5 per gallon. So across the board, $5 diesel is now essentially the floor, and in some areas, that’s actually the cheaper end of the spectrum.”

At the high end, prices are reaching extremes with California’s average diesel price now surpassing $8 per gallon.

Global Tensions Cloud Relief Outlook

With prices continuing to climb, farmers are looking for relief. What would it take to reverse course? That answer remains tied to global uncertainty.

“Relief may be a little bit elusive,” De Haan admits. “It really just depends on the daily developments in the situation between the U.S. and Iran—whether the Strait is open or not, or whether we’re in phases of escalation.”

The Strait of Hormuz remains a critical chokepoint for global energy supply, moving roughly 20 million barrels of oil per day.

“Nothing else matters to the oil market more than this waterway,” he emphasizes. “We’ve seen attacks that have pushed oil prices higher, which in turn pushes diesel wholesale prices up. You may get a little bit of day-to-day relief, but there really is no ‘coast is clear’ until there’s some sort of definitive resolution.”

And even then, he says a turnaround won’t happen overnight.

“If there is a definitive signal to the market, if the Strait reopens and both sides are aligned, prices could start falling within 48 hours,” De Haan explained. “But the rate of decline is likely to slow after that initial drop.”

Prices Likely to Remain Elevated Through 2026

Not only is the rate of decline projected to be slow, but De Haan says diesel prices aren’t likely to drop back to pre-war levels by the end of the year.

“Roughly half of the increase we’ve seen over the last couple of months could come down within the first few months of positive news,” he said. “But the other half could take many more months. We may not get back to pre-conflict diesel prices until late this year—or even into 2027.”

For agriculture, that prolonged stretch of elevated prices carries real consequences.

“When you look at what comes out of a barrel of oil, diesel only makes up about 25%,” De Haan explained. “Gasoline is a larger portion, so it’s been less impacted. Jet fuel, which is an even smaller share, has been hit the hardest. So it’s almost inverse to how much is produced.”

Why Diesel Is Climbing Faster Than Gasoline

If it feels like diesel prices are rising faster and hitting harder than gasoline, there’s a reason rooted in how a barrel of oil gets used.

“Diesel has seen more of the sticker shock compared to gasoline,” says De Haan. “And a lot of that comes down to what comes out of a barrel of oil.”

Not all fuels are created equally in supply. Gasoline makes up the largest share of a refined barrel, while diesel represents a smaller slice, making it more vulnerable when supply is disrupted.

“Gasoline is the top product flowing out of a barrel of oil, so it’s been the least impacted,” De Haan explains. “Diesel, on the other hand, only accounts for about 25% of a barrel, so it’s been more impacted when there are supply issues.”

That imbalance becomes even clearer when looking across the full spectrum of refined fuels.

“The most significant impact has actually been to jet fuel, which is only about 9% of a barrel,” he adds. “So if you look at it inversely—the smaller the share of the barrel, the bigger the impact we’re seeing right now.”

For agriculture, that dynamic matters more than most sectors.

Diesel isn’t optional on the farm. It’s essential. From planting to harvest, it powers tractors, trucks and the supply chain that moves commodities across the country.

“Diesel is the fuel that drives agriculture,” De Haan say. “And that’s why these price increases are so impactful, not just at the pump, but all the way through the economy.”

And while prices are already elevated, the full effect is still working its way downstream.

“Consumers really haven’t even seen the full onset of some of these higher prices yet,” he adds. “That’s going to continue to trickle through in the weeks ahead.”

Demand Holding...for Now

Even with these high prices, so far, demand hasn’t shown many signs of slowing.

“We have not seen much meaningful decrease in demand yet,” De Haan says. “We’ve seen very little, if any, diesel demand destruction so far, which tells you the economy is essentially preparing to pay these prices because it still needs the fuel.”

But there are warning signs ahead.

“If diesel nationally hits $6 a gallon, that’s likely when we start to see consumption slow,” he says. “For gasoline, that number is about $5 a gallon. We’re getting very close to those thresholds.”

Until then, the pressure continues to mount. And for farmers heading deeper into the growing season, that pressure is becoming harder to ignore.