According to data released by the Energy Information Administration on September 25th, the national average price of diesel fuel has seen a notable change. It dropped by 4.7 cents per gallon, reaching a new price of $4.586 per gallon. This comes after a nine-week streak of continuous increases, during which the price of diesel climbed by a substantial 82.7 cents.

Additionally, on-highway gasoline also experienced a decrease in its average price, falling by 4.1 cents to settle at $3.837 per gallon. This decline is attributed to the typical seasonal drop in demand following the Labor Day weekend.

The last time diesel prices decreased was on July 3rd when it fell by 3.4 cents to $3.767 per gallon. Currently, the average price of a gallon of diesel is 30.3 cents lower than it was at the same time in the previous year. Notably, at the end of June, the difference in price compared to the previous year was much larger, exceeding $1.90.

In terms of regional variations, the average diesel price decreased in seven out of the ten regions surveyed by the EIA, with the most significant decline of 7.1 cents occurring in the Gulf Coast region. Conversely, New England experienced the largest increase of 2 cents in diesel prices.