Will headline CPI fall below 3.5% year over year before December 31, 2026?

As of late September 2026, headline CPI would need to fall below 3.5% year over year within roughly 3 months. The Fed held rates steady at 3.50 to 3.75% as of June 17, 2026, and the June SEP median projects the year end 2026 funds rate at 3.8%, suggesting the Committee expects inflation to remain sticky or even rise slightly into year end. With nine of eighteen SEP participants projecting rates above the current range by year end, the median dot plot signals hawkish expectations about inflation persistence. Historical precedent shows that quarterly disinflation of 0.5% or more in headline CPI over a 3 month window occurs infrequently outside of demand shock scenarios. The combination of unchanged policy rates, higher rate expectations in the SEP, and the proximity to year end suggests limited disinflationary momentum is expected. My training knowledge is insufficient to assess the exact June or July 2026 CPI readings, but the Fed's signal of higher year end rates implies baseline inflation forecasts around 3.5 to 3.8%.