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Inflation Rose to 3.7% in September as Gas Jumped 9% in a Month. Here’s What Went Up.

A shopper looks the meat section of a grocery story in Fort Worth, Texas, Wednesday, Oct. 7, 2026. (AP Photo/LM Otero)

Inflation Rose to 3.7% in September as Gas Jumped 9% in a Month. Here’s What Went Up.

The Consumer Price Index rose 0.6% in September and 3.7% over the year, above forecasts. Gas, up 34% from a year ago, drove half the jump, but rent, used cars, clothing and airfare rose too. Traders now see a 54% chance of a Fed hike this month.

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Key Points

  • Consumer prices rose 3.7% over the year ending in September, up from 3.4% in August.
  • Gas jumped 9.1% in September alone and is up 34.2% from a year ago.
  • Core inflation, excluding food and energy, rose to 2.6%; airfares are up 22.4%.
  • Groceries were flat for the month and up 2.5% over the year.
  • Odds of a Fed rate hike at the Oct. 27-28 meeting rose to about 54%.
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Prices rose faster in September. Inflation hit 3.7% over the past year, up from 3.4% in August and higher than economists expected, the Labor Department said Wednesday. Gas did most of the damage, but this time prices also climbed for rent, used cars, clothes and plane tickets, which means it’s spreading beyond the pump.

Prices rose 0.6% in September alone. “The CPI was clearly hot, and there aren’t many ways to sugarcoat it,” said Adam Crisafulli of Vital Knowledge, CBS News reported.

Gas prices posted on a gas station sign
Gas prices are up 34% from a year ago, according to the Labor Department. Photo: Downtowngal via Wikimedia Commons, CC BY-SA 4.0.

Why did inflation go up in September?

Energy. Gas prices jumped 9.1% in one month and accounted for about half of September’s increase. Over the past year, gas is up 34.2%, energy overall 20.4% and heating oil 74.2%, CNBC reported. The national average for regular was $4.33 a gallon Wednesday, according to AAA, up from $2.98 before the war with Iran began in late February. Diesel, which trucks use to move almost everything you buy, averaged $6.29 after hitting a record in late September.

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NBC News: September inflation rises to 3.7%, driven by high diesel prices.

Which prices went up the most?

  • Gas: up 34.2% from a year ago.
  • Airfares: up 22.4% from a year ago.
  • Rent and housing: up 0.4% in September alone.
  • Used cars and trucks: up 0.7% for the month.
  • Clothing: up 3.4% from a year ago, a category sensitive to tariffs.
  • Groceries: flat for the month and up 2.5% from a year ago, the one bit of relief.

“Core” inflation, which leaves out food and energy, rose to 2.6% from 2.4%, also higher than forecast. Economists watch that number because it shows whether high prices are sticking around. “Energy prices being so high for so long is starting to seep into the broader economy,” Crisafulli said.

Will the Fed raise interest rates again?

The odds just went up. The Fed raised rates in September for the first time since 2023, to a range of 3.75% to 4%. After Wednesday’s report, futures traders put the chance of another hike at the Oct. 27-28 meeting at about 54%, and above 96% by year’s end, according to CME Group data cited by CNBC. If you carry a credit card balance, an adjustable-rate loan or a home equity line, that’s where you’ll feel it first.

The BeezLoop Take

The headline number is about gas, and gas is about the war with Iran. But the part that should worry people is the rest of the list: rent, cars, clothes, flights. When fuel stays expensive for months, it gets baked into what everything else costs to make and ship, and those prices don’t fall when gas does.

That leaves working families squeezed from both sides: higher prices now, and the Fed raising borrowing costs to fight them. Three weeks before the midterms, no amount of promised checks changes what people pay at the pump on Monday.

The open question: if the Fed keeps raising rates to fight prices driven by a war, does it cool inflation, or just make debt more expensive for the same people paying for gas?

Also on BeezLoop: what the big banks say about how Americans are holding up, and Trump’s Russian diesel deal to bring down fuel prices.

Sources: CBS News · CNBC · NBC News (video)

How We Sourced This

Written by Kevin Nordi

Kevin Nordi is a freelance writer with five years of experience covering politics, sports, and the everyday moments that shape people's lives. He holds a Bachelor of Science in Multimedia…

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BeezLoop News is an independent online news, discussion, opinion, and blog publication. Our articles combine reporting with editorial commentary and analysis. See our editorial standards for how we handle sourcing and corrections.

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