CHEYENNE (WNE) — Average gasoline prices in Wyoming have fallen 13.8 cents per gallon in the last week, averaging $3.37 per gallon Monday, according to GasBuddy.com’s survey of 494 stations in Wyoming.

Prices in Wyoming are 27.4 cents per gallon lower than a month ago, and stand 4.4 cents per gallon lower than a year ago.

The national average price of diesel has fallen 7.9 cents in the last week, and stands at $5.20 per gallon.

According to GasBuddy price reports, the lowest price in the state was $2.59 per gallon Sunday, while the highest was $4.21, a difference of $1.62 per gallon.

The national average price of gasoline has fallen 12.4 cents per gallon in the last week, averaging $3.52 per gallon Monday.

The national average is down 22.7 cents per gallon from a month ago, and stands 14.1 cents per gallon higher than a year ago, according to GasBuddy data.

The data is compiled from more than 11 million weekly price reports covering over 150,000 U.S. gas stations.