US consumer prices stayed high in August as Iran war pushed energy costs up

• Diesel prices surpassed $6 per gallon for the first time ever, while gas prices averaged $4.29, up $1.10 from a year earlier
• The Fed's board meeting next week will decide on interest rates, with three members dissenting at the July meeting for the first time in a decade
• Consumer sentiment has dropped to record lows as Americans struggle with affordability, creating political pressure ahead of midterm elections

Summary

Key Economic Data:

U.S. inflation remained elevated at 3.4% in August, unchanged from July, as conflict with Iran drove energy costs higher. Core inflation (excluding food and energy) rose to 2.4%. The May 2026 peak reached 4.2%, a three-year high.

Energy Market Impact:

Diesel prices surpassed $6 per gallon for the first time, while average gas prices hit $4.29—$1.10 higher than the prior year. Rising energy costs continue to keep inflation above pre-conflict levels.

Federal Reserve Response:

The Fed faces critical decisions at its upcoming board meeting. Current interest rates stand at 3.5%-3.75%, down two percentage points from two years ago. After previously raising rates to 5.25%-5.5% to combat 9.1% inflation in 2022, the Fed successfully reduced it to 2.3% by April 2025.

Fed Chair Kevin Warsh emphasized commitment to combating inflation and achieving the 2% target. Governor Christopher Waller suggested rate hikes remain possible if inflation doesn't ease, though he'd support holding steady if progress continues toward the 2% goal.

Market Implications:

Treasury yields reached their highest levels since the 2008 recession, reflecting inflation concerns. Consumer sentiment hit record lows as Americans struggle with gas and grocery costs.

Political Context:

The persistent inflation poses challenges for Republicans ahead of midterm elections, with Trump proposing a $5,000 "dividend" for voters and publicly pressuring the Fed to lower rates. The July Fed meeting saw unprecedented dissent, with three board members opposing the decision—the first such split in a decade.