Current basin-wide precipitation deficits, including the 29th-driest January–August period on record for the Greater Mississippi River Basin and a notably dry August, have set the stage for seasonal low flows on the Lower Mississippi. Recent rainfall across the Upper Mississippi and Ohio basins has eased immediate pressure, supporting short-term forecasts that show modest rises at upstream gauges like Cairo and Memphis while Baton Rouge holds near 7 ft. NOAA seasonal outlooks and river models highlight the key variables—additional fall precipitation totals, soil moisture recovery, and any late-season tropical moisture—that will determine whether the river reaches its typical seasonal minimum near 5–6 ft or drops further into the 3–4 ft range by late November. This uncertainty produces closely matched market-implied probabilities across the bins.