Average gasoline prices in Montana have risen 1.2 cents per gallon in the last week, averaging $3.13/g on Monday, April 28, according to GasBuddy’s survey of 615 stations in Montana. Prices in Montana are 3.1 cents per gallon higher than a month ago and stand 40.3 cents per gallon lower than a year ago. According to GasBuddy price reports, the cheapest station in Montana was priced at $2.95/g on