Triple A Texas gas prices shows the average price for a gallon in the Beaumont-Port Arthur area on September 18 at $3.86. A year ago, September 18, 2025, the average price for a gallon of regular was $2.70.
In Texas, the lowest average price is in Houston, $3.84 a gallon, while the highest average is in San Angelo where the price at the pump is $4.14 a gallon. Nationwide, Californians are paying the highest prices for a gallon, with an average price of $6.11 a gallon. Texas has the lowest gas prices in the nation with an average price of $3.95.
Diesel prices have skyrocketed. On September 18, the average price for a gallon in the Beaumont-Port Arthur area, $5.89, is up $2.74 from September 18, 2025 when the price was $3.15 a gallon. The average price for a gallon of diesel in California jumped $3.23 over the past year to $8.38 a gallon.
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