US gas prices fall for a third straight week to $3.999 a gallon as of June 18, 2026

As of June 18, 2026, U.S. gasoline prices have declined for a third consecutive week, with the national average at $3.999 per gallon, below the $4 threshold. Prices remain well above the average in states such as California ($5.642) and Washington ($5.436), while Texas ($3.493) and Oklahoma ($3.508) are notably cheaper. The figures suggest a temporary softening in retail fuel demand or relatively ample supply, adding pressure to gasoline futures.