(CNN) - Gas prices have fallen 46 cents per gallon in the last two months.
The Lundberg Survey of gas prices attributes the drop to refinery problems that were being fixed just as seasonal demand started shrinking. Crude oil is also cheaper, following a period of steadily rising prices.
The national average for gasoline is now $3.38 per gallon. The most expensive gas averages: $3.85 in Long Island, New York. The cheapest averages: $3.04 in Memphis, Tennessee.
Arkansas' average is $3.12 per gallon. That's down eight cents from last month, but the same as this time last year.