Recent energy price surges tied to Middle East supply disruptions have positioned a modest rebound in headline CPI as the dominant driver of September 2026 inflation expectations, with gasoline contributing the largest monthly lift in over six months. August’s 3.4% year-over-year print and 0.4% month-over-month gain established a higher base, while core measures held at 2.4% amid subdued goods prices and steady shelter costs. Trader consensus reflected in the 47% and 33.5% implied probabilities for 3.6% and 3.7% outcomes aligns with economist forecasts anticipating a 0.5–0.6% headline monthly increase offset by a 0.2% core reading. The September 16 FOMC rate hike to the 3.75–4.00% range and updated SEP projections for 3.7% 2026 PCE inflation reinforce the near-term upward tilt, though moderating services momentum and the October 14 release timing leave room for variance around the central 3.6–3.7% cluster.