MISSOULA — Gas prices have risen over the last week in Montana.
Gasbuddy.com reports the average price for a gallon of gas rose 1.8¢ to $3.23 as of Monday, August 18, 2025.
Prices in Montana are 1.1¢ per gallon lower than a month ago and stand 25.6¢ per gallon lower than a year ago.
The national average held unchanged over the past week, remaining at $3.09 as of Monday.
The national average is 4.6¢ per gallon lower than a month ago, and is 27.9¢ per gallon lower than a year ago
The cheapest gas in Montana was $2.86 per gallon on Sunday, while the most expensive was $4.19.
