CHEYENNE (WNE) — Average gasoline prices in Wyoming have risen 11.9 cents per gallon in the last week, averaging $3.38 per gallon Monday, according to GasBuddy.com’s survey of 494 stations in Wyoming.

Prices in Wyoming are 53.4 cents per gallon higher than a month ago and stand 9.2 cents per gallon higher than a year ago. The national average price of diesel has risen 5.4 cents in the last week and stands at $4.65 per gallon.

According to GasBuddy price reports, the cheapest station in Wyoming was priced at $2.89 per gallon on Sunday, while the most expensive was $3.89, a difference of $1 per gallon.

In Sublette County, the average gas price is $3.45, according to GasBuddy price reports on Wednesday.

The national average price of gasoline has risen 9.7 cents per gallon in the last week, averaging $3.49 per gallon on Monday. The national average is up 33.3 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.