The Weekly Fill-Up | June 1-5

June 1, 2026

As June begins, fuel markets are entering a different phase than what we experienced throughout planting season. Across eastern South Dakota, many operations are shifting from intensive field preparation and planting activity into crop management, transportation, and summer maintenance. While that may sound like a slowdown, fuel markets are facing a unique mix of global and domestic pressures that make this an important week to watch.

One of the biggest stories impacting fuel markets right now is the continued drawdown in U.S. crude oil inventories. Recent government data shows crude stockpiles have fallen for multiple consecutive weeks, a sign that demand remains strong despite economic uncertainty. At the same time, gasoline inventories have also declined as the country enters the summer driving season. While gasoline receives most of the attention this time of year, the same refinery system that produces gasoline also produces diesel fuel, meaning stronger overall fuel demand can influence diesel markets as well.

For diesel users across South Dakota, another important trend is refinery utilization. U.S. refineries are operating at relatively high rates compared to historical averages, with utilization above 91% nationally and forecasts calling for even stronger refinery runs during the summer months. Higher refinery output helps support diesel availability, which is good news as agricultural demand remains elevated across the Midwest.

However, supply remains tighter than it appears on the surface. Energy analysts continue to warn that U.S. distillate inventories—which include diesel fuel—remain below historical norms. Several refinery closures over the past two years have reduced overall refining capacity, leaving less room for error when demand increases or unexpected disruptions occur. This doesn’t mean shortages are imminent, but it does mean diesel markets can react more quickly to changes than they did several years ago.

Global events remain part of the conversation as well. Energy markets continue to monitor developments involving oil transportation routes in the Middle East. While conditions have improved compared to earlier disruptions, uncertainty surrounding global oil shipments continues to influence crude prices and trader sentiment. The U.S. Energy Information Administration recently noted that global oil inventories have been tightening, contributing to elevated crude values entering June.

Closer to home, one of the more important considerations for Sioux Valley Coop patrons is simply maintaining fuel readiness as summer workloads evolve. June often brings increased diesel demand from spraying operations, haying equipment, transportation, and construction activity. Unlike planting season, where demand tends to surge in concentrated bursts, summer demand is often spread across a wider range of activities. This creates a steadier draw on fuel inventories over time.

Propane markets remain in a strong position. Inventories are healthy heading into summer, and demand remains seasonally low following the end of the heating season. Industry analysts continue to point to storage levels as a positive factor supporting propane availability across the Midwest. While propane is not top-of-mind for most operations this time of year, summer can be an excellent opportunity to evaluate tank conditions, review usage patterns, and prepare for future needs before fall demand returns.

The key takeaway for the week of June 1 is stability with caution. Fuel supplies remain available, refineries are running hard, and propane inventories are strong. At the same time, diesel markets continue operating with less cushion than they once had, making proactive planning as valuable as ever. For Sioux Valley Coop patrons, staying ahead of fuel needs now can help ensure smooth operations throughout the busy summer months.

Sources

U.S. Energy Information Administration (EIA) – Weekly Petroleum Status Report
U.S. Energy Information Administration – Short-Term Energy Outlook: Global Oil Markets
U.S. Energy Information Administration – Today in Energy: Refinery Closures and Distillate Inventories
Reuters – U.S. Crude, Gasoline, and Distillate Inventory Reports (May 2026)
YCharts – U.S. Refinery Utilization Data
RBN Energy – Propane Storage and Export Market Analysis