Recent hot, dry conditions across the Southern Plains, Lower Mississippi Valley, and Southeast have driven D4 (exceptional drought) expansion amid the warmest June–August on record, with 1.8% of the contiguous U.S. now in D4 per the September 22 U.S. Drought Monitor. Improvements from recent rainfall in the West, northern Plains, and Midwest have limited further spread, leaving D4 concentrated in a handful of states. The week-of-September-29 map hinges on 6–10-day precipitation forecasts favoring above-normal rain over central regions but continued dryness and above-normal temperatures in the South; model consensus and any late-September tropical moisture will determine whether D4 persists at low levels, expands modestly, or contracts. Trader odds reflect this narrow window between persistence and relief before the next official assessment.