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US Inflation Accelerates to 3.4 Percent as Diesel Hits Record

By Markets Desk · 2026-09-12 · 2 min read
A gas pump nozzle resting on a concrete surface next to a stack of grocery bags
Illustration: Tradingbird

Consumer prices rose 0.4 percent in August, marking a sharp acceleration from July. Diesel averages reached $6.05, the highest level on record.

US consumer inflation accelerated in August, rising 0.4 percent from the previous month. The annual rate held steady at 3.4 percent, matching July levels. The Labor Department reported these figures on Friday. This marks a significant uptick from the 0.1 percent gain seen in July.

Diesel prices hit a record average of $6.05 per gallon. This is up from $5.85 the prior week. Prices were $3.70 at this time last year. The surge is attributed to disruptions in global fuel flows. Higher transport costs are now being passed to consumers.

Wholesale Costs and Energy Prices

Producer prices rose 5.4 percent year-over-year in August. This is an increase from 4.8 percent in July. Monthly wholesale inflation also accelerated to 0.4 percent. Oil prices topped $100 a barrel on Thursday. These costs reflect ongoing geopolitical tensions and energy supply issues.

The Federal Reserve faces continued pressure to manage stubborn inflation. Costs have remained elevated for over five years. Businesses are adding fees to online orders to offset shipping expenses. This trend indicates that energy costs are embedding into broader price levels.

Housing Market Slows Down

Existing home sales fell to a seasonally adjusted annual rate of 3.98 million units. This is the slowest pace in over a year. Sales dropped 2 percent from July. This marks the third consecutive monthly decline. Economists had expected a pace just above 4 million units.

The 30-year fixed mortgage rate rose to 6.76 percent. This is the highest level in 14 months. Rates have climbed for three straight weeks. Buyers are grappling with higher financing costs and home prices. The market shows clear signs of cooling demand.

Political and Economic Implications

Rising costs are a central issue for voters ahead of midterms. The administration faces criticism over economic management. Tariffs on Canada may add further pressure on prices. According to GN markets/inflation analysis, these factors create a challenging environment for household budgets.

Consumers report pain at grocery stores and gas stations. The combination of high inflation and slowing housing creates a dual pressure. Businesses are adjusting pricing strategies in response. The economic outlook remains tense as costs persist.

Based on reporting by Newsday, compiled by the Tradingbird desk.

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