Missoula, MT (KGVO-AM News) - Average gas prices in Montana haven’t increased since September 2, 2025, but that changed this week. Patrick De Haan is the head of petroleum analysis at GasBuddy, and he provided the current numbers.              

“Average gasoline prices in Montana have risen 0.7 cents per gallon in the last week, averaging $2.70 per gallon today,” De Haan said. “Prices in Montana are 3.9 cents per gallon lower than a month ago and stand 29.0 cents per gallon lower than a year ago." 

As of Monday morning, most stations in Missoula had their prices set to around $2.79 per gallon, which is a .10 cent increase. According to GasBuddy price reports, the cheapest station in Montana was priced at $2.52 per gallon yesterday, while the most expensive was $3.05 per gallon.       

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Montana is currently ranked 32nd in the U.S. when it comes to the average price of gas, which is five spots lower than last week.     

"The national average price of gasoline has risen 1.2 cents per gallon in the last week, averaging $2.84 per gallon today,” De Haan said. “The national average is up 5.4 cents per gallon from a month ago and stands 24.9 cents per gallon lower than a year ago. The national average price of diesel has increased 2.9 cents compared to a week ago and stands at $3.61 per gallon.”              

READ MOREMontana Gas Prices: How Low Can They Go?

The national average price of gasoline only edged slightly higher last week, but De Haan said nine of the ten largest weekly price movements were increases, led by West Coast states as California begins the transition to summer gasoline. 

“Most states saw relatively minor fluctuations, but we’re now starting to see seasonal trends take hold on the West Coast, with those pressures expected to gradually push eastward in the weeks ahead,” De Haan said. “Even though oil prices slipped slightly last week amid reduced geopolitical risk, strengthening seasonal factors are likely to intensify, potentially driving the national average back above the $3-per-gallon mark, where prices could remain for at least part of the spring.”  

LOOK: See how much gasoline cost the year you started driving

To find out more about how has the price of gas changed throughout the years, Stacker ran the numbers on the cost of a gallon of gasoline for each of the last 84 years. Using data from the Bureau of Labor Statistics (released in April 2020), we analyzed the average price for a gallon of unleaded regular gasoline from 1976 to 2020 along with the Consumer Price Index (CPI) for unleaded regular gasoline from 1937 to 1976, including the absolute and inflation-adjusted prices for each year.

Read on to explore the cost of gas over time and rediscover just how much a gallon was when you first started driving.

Gallery Credit: Sophia Crisafulli

 

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