Average gasoline prices in Wyoming have risen 1.9 cents per gallon in the last week, averaging $3.08/g today, according to GasBuddy's survey of 494 stations in Wyoming. Prices in Wyoming are 5.4 cents per gallon higher than a month ago and stand 16.2 cents per gallon lower than a year ago. The national average price of gasoline has risen 2.2 cents per gallon in the last week, averaging $3.14/g today. “Florida, Ohio, Michigan, and Maryland— all states known for routine price cycling— saw double-digit jumps to average gas prices. Billings- $3.14/g, down 6.8 cents per gallon from last week's $3.21/g.