Gas Prices Fall 10.1 Cents During Week

Average gasoline prices in Montana have fallen 10.1 cents per gallon in the last week, averaging $2.85/g on Monday, Dec. 15, according to GasBuddy’s survey of 615 stations in Montana. Prices in Montana are 13.9 cents per gallon lower than a month ago and stand 8.3 cents per gallon higher than a year ago. The national average price of diesel has decreased 5.3 cents compared to a week ago and stands at $3.618 per gallon.

According to GasBuddy price reports, the cheapest station in Montana was priced at $2.60/g on Sunday, Dec. 14, while the most expensive was $3.19/g, a difference of 59.0 cents per gallon.

The national average price of gasoline has fallen 4.5 cents per gallon in the last week, averaging $2.85/g on Monday. The national average is down 22.0 cents per gallon from a month ago and stands 12.6 cents per gallon lower than a year ago, according to Gas-Buddy data.

Historical gasoline prices in Montana and the national average going back 10 years: Dec. 15, 2024: $2.77/g (U.S. Average: $2.98/g) Dec. 15, 2023: $2.96/g (U.S. Average: $3.05/g) Dec. 15, 2022: $3.02/g (U.S. Average: $3.14/g) Dec. 15, 2021: $3.37/g (U.S. Average: $3.32/g) Dec. 15, 2020: $2.22/g (U.S. Average: $2.20/g) Dec. 15, 2019: $2.64/g (U.S. Average: $2.55/g) Dec. 15, 2018: $2.60/g (U.S. Average: $2.37/g) Dec. 15, 2017: $2.60/g (U.S. Average: $2.43/g) Dec. 15, 2016: $2.17/g (U.S. Average: $2.23/g) Dec. 15, 2015: $2.14/g (U.S. Average: $2.01/g) “For the third straight week, the national average price of gasoline has fallen, once again setting a new multi-year low,” said Patrick De Haan, head of petroleum analysis at GasBuddy. “Just ahead of Christmas, the national average stands at its lowest level since March 12, 2021, delivering weekly savings of nearly $400 million compared to this time last year. Gas prices are now lower in a majority of states, and the good news is that the downward trend may continue into the closing innings of 2025, with further declines likely across much of the country. That’s being driven by refineries wrapping up maintenance and boosting output to near summer highs, increasing fuel supply, while additional oil production from OPEC has pressured crude prices lower as well.”