Mid-Month to Mid-Month: Mid-September Prices Up From August

During the latest mid-month period, prices at Mont Belvieu, Texas, increased. The posted prices increased 15.375 cents/gal from August mid-month to September mid-month, while the spot prices increased 15.875 cents. Conway, Kansas, postings increased 11.275 cents/gal, and spots increased 12.5 cents over the month. 

Mont Belvieu Postings 

The Mont Belvieu mid-August posted price was 79.375 cents/gal. The next week the price increased 5.125 cents to 84.5 cents/gal, followed by a 4.5-cent decrease to 80 cents/gal. Postings increased 6.375 cents to 86.375 cents/gal the first week of September, followed by a 8.375-cent increase to 94.75 cents/gal at mid-month. Compared to the same time in September 2025, the September 2026 prices were 16.27 cents higher. 

Conway Postings 

The Conway mid-August posted price was 68.685 cents/gal. The next week the price increased 4.625 cents to 73.31 cents/gal, followed by a 4.44-cent decrease to 68.87 cents/gal. Postings increased 5.655 cents to 74.525 cents/gal the first week of September, followed by a 5.435-cent increase to 79.96 cents/gal at mid-month. Compared to the same time in September 2025, the September 2026 prices were 5.547 cents higher. 

Mont Belvieu Spots 

Mont Belvieu spots opened mid-August at 68.125 cents/gal. The next week the price increased 5.875 cents to 74 cents/gal, followed by a 6.5-cent decrease to 67.5 cents/gal the next week. Spots increased 9.875 cents to 77.375 cents/gal the first week of September, followed by a 6.625-cent increase to 84 cents at mid-month. Compared to the same time in September 2025, the September 2026 prices were 17 cents higher. 

Conway Spots 

Conway spots opened mid-August at 62.5 cents/gal. The next week the price increased 5.375 cents to 67.875 cents/gal, followed by a 5.375-cent decrease to 62.5 cents/gal the next week. Spots increased 7.75 cents to 70.25 cents/gal the first week of September, followed by a 4.75-cent increase to 75 cents/gal at mid-month. Compared to the same time in September 2025, the September 2026 prices were 8 cents higher. 

SOURCE: The BPN Pricing & Supply Newsletter, Sept. 10, 2026. BPN Pricing & Supply Newsletter subscribers receive all the latest posted and spot prices from major terminals and refineries around the U.S. delivered to inboxes every week. Receive a center spread of posted prices with hundreds of postings updated each week, along with market analysis, insightful commentary, and much more not found elsewhere.