Gas prices see a temporary increase, with minor changes in multiple regions. According to U.S. Energy Information Administration (EIA) data, the national price for a gallon of gas has been virtually unchanged since last week, holding up at $3.18.

The national average is down 13 cents from a month ago and is about 65 cents per gallon lower than a year ago, according to EIA data.

"With oil prices jumping after the U.S. Federal Reserve cut interest rates by a larger-than-expected half percent, we've seen some states where gas prices have inched back up, while others have continued to decline," GasBuddy Head of Petroleum Analysis Patrick De Haan said.

Most of these increases should be temporary, with declines expected to return in the days and weeks ahead, he continued. For areas that had been left out of the recent drops, like California, Nevada, and western Arizona, refinery issues are improving, and gas prices should start moving lower.

Diesel prices see an increase in the fourth week of September. Check out Work Truck to see which region has the lowest prices.

U.S. Regional Gasoline Prices as of September 23, 2024

Here's a look at prices by region according to EIA data, as of Sept. 23:

• East Coast: $3.05

• Midwest: $3.07

• Gulf Coast: $2.73

• Rocky Mountain: $3.43

• West Coast: $4.11

Over the last week, the Midwest region saw the greatest price increase with a change of 7 cents. The East Coast region saw the greatest decrease week-over-week, with prices decreasing by 3 cents.

Here's a list of the 10 lowest average prices per gallon, according to AAA data as of Sept. 23:

Mississippi has maintained the lowest price for a gallon of gas (currently $2.71) throughout September. Texas, Tennessee, and Louisiana follow closely behind at $2.78.

U.S. Regional Gasoline Prices as of September 16, 2024

Gas prices continue to decline steadily, with most regions affected by the downward trend. According to U.S. Energy Information Administration (EIA) data, the national price for a gallon of gas has dropped to $3.18, which is 5 cents less than last week.

The national average is down 20 cents from a month ago and is about 69 cents per gallon lower than a year ago, according to EIA data.

"With the change to winter gasoline happening today at most stations across the country, the outlook is bright for the national average to continue to make a run at falling to $2.99 per gallon for the first time since 2021," Haan said.

While nearly all states are seeing prices drop, refinery maintenance and some outages at California refineries have led to tight supply and rising prices in the region.

Diesel prices are also experiencing a decrease. Check out Work Truck to see which region has the lowest prices.

Here's a look at prices by region according to EIA data, as of Sept. 16:

• East Coast: $3.08

• Midwest: $3.00

• Gulf Coast: $2.72

• Rocky Mountain: $3.40

• West Coast: $4.13

Over the last week, the Rocky Mountain and West Coast regions saw an increase in prices. The Midwest region saw the greatest decrease week-over-week, with prices decreasing by 9 cents.

Here's a list of the 10 lowest average prices per gallon, according to AAA data as of Sept. 16:

Mississippi and Texas offer the cheapest price for a gallon of gas ($2.73), with South Carolina ($2.74) following close behind. AAA records indicate that prices in 17 states fall under $3 per gallon.

U.S. Regional Gasoline Prices as of September 9, 2024

Gas prices continue to fall for the sixth straight week, with most regions across the country experiencing the decline. According to U.S. Energy Information Administration (EIA) data, the national price for a gallon of gas has dipped to $3.23, which is 5 cents less than last week.

The national average is down 18 cents from a month ago and is about 58 cents per gallon lower than a year ago, according to EIA data. 

"Gas prices have dropped to their lowest since [last] winter," De Haan said.

Gas prices will continue to drop as Americans drive less with the onset of fall, De Haan continued. The national average could fall below $3 per gallon as early as October for the first time since 2021.

Diesel prices are the lowest they've been since early 2022. Check out Work Truck to see which region has the lowest prices.

Here's a look at prices by region according to EIA data, as of Sept. 9:

• East Coast: $3.14

• Midwest: $3.09

• Gulf Coast: $2.80

• Rocky Mountain: $3.35

• West Coast: $4.10

Over the last week, prices in the West Coast region saw a minor increase, which did not affect the overall average. The East Coast region saw the greatest decrease week-over-week, with prices decreasing by 8 cents.

Here's a list of the 10 lowest average prices per gallon, according to AAA data as of Sept. 9:

Mississippi maintains the cheapest price for a gallon of gas. AAA records indicate that prices in 11 states fall under $3 per gallon, with the potential of the national average following suit in the coming weeks.

U.S. Regional Gasoline Prices as of September 2, 2024

To start off September, prices at the pump are down in multiple regions for the fifth straight week. The national average price of gasoline dropped about 3 cents in the last week to $3.28, according to U.S. Energy Information Administration (EIA) data. Prices year-over-year are down 51 cents.

The decline is a byproduct of seasonal trends as we transition from summer to fall, according to De Haan. A continued drop could also be due to the changeover to cheaper winter gasoline only two weeks away.

"As long as we don't see a major hurricane head into the Gulf and the situation improves in the Middle East, the national average could fall below $3 in the next two months," De Haan said.

Diesel prices fell again this week but may rise with winter growing closer. Check out Work Truck to see which region has the lowest prices.

Here's a look at prices by region according to EIA data, as of Sept. 2:

• East Coast: $3.23

• Midwest: $3.17

• Gulf Coast: $2.84

• Rocky Mountain: $3.40

• West Coast: $4.10

Over the last week, prices rose in the Rocky Mountain and West Coast regions. The Gulf Coast saw the greatest drop in prices, dipping 5 cents.

Here's a list of the 10 lowest average prices per gallon, according to AAA data as of Sept. 2:

Mississippi maintains the cheapest price for a gallon of gas. The gap between states falling under $3 per gallon continues to close, with a 3-cent difference between Missouri ($2.99) and Kansas ($3.02).