Average retail gasoline prices in Wyoming have fallen 2.8 cents per gallon in the past week, averaging $2.54/g yesterday, according to GasBuddy's daily survey of 494 gas outlets in Wyoming. This compares with the national average that has increased 0.5 cents per gallon in the last week to $2.29/g, according to gasoline price website GasBuddy.com.

Including the change in gas prices in Wyoming during the past week, prices yesterday were 91.5 cents per gallon lower than the same day one year ago and are 18.5 cents per gallon lower than a month ago. The national average has decreased 11.4 cents per gallon during the last month and stands 99.5 cents per gallon lower than this day one year ago.

"Few people on the eastern seaboard are concerned with gasoline prices today knowing that while the major impact of Hurricane Joaquin may be behind us, the Carolinas anticipate still more rain today exacerbating what has already been catastrophic flooding," said Gregg Laskoski, senior petroleum analyst for GasBuddy.

"Overall, the national average price of gas since last week remains virtually unchanged. While Great Lakes states saw prices climb last week, western states saw sharp declines from deep discounts in wholesale fuel prices... bringing California, Washington and Oregon prices down more than 35 cents lower than where they stood a month ago. Opening this week Pacific Northwest wholesale gasoline prices are among the lowest in the U.S. and that is truly a rarity."

"While the rate of decline has slowed we still expect the overall decline to continue this week with a nominal decrease in retail gasoline in most parts of the country," Laskoski added.