An approaching Pacific storm system is the primary driver shaping precipitation expectations for September 2, with National Weather Service forecasts indicating widespread rain and wind developing across western Washington and the Pacific Northwest as moisture spreads inland from the coast. Scattered showers remain possible in the Northeast and parts of the Southeast due to lingering humidity and weak frontal boundaries, while much of the South and interior regions trend drier under mostly sunny conditions. NOAA and NWS short-range guidance, including probability of precipitation maps and model consensus from the Weather Prediction Center, highlight moderate uncertainty in exact rainfall totals and boundaries, with updates expected throughout September 1 as new model runs refine steering patterns and intensity. Traders should monitor official NWS briefings for localized adjustments ahead of resolution.