Recent NOAA outlooks and model guidance highlight an early-September trough delivering 0.5–0.75 inches or more across the Puget Sound region in the first days of the month, marking the shift from a dry summer pattern. A strengthening El Niño, with Niño 3.4 anomalies exceeding +2 °C, tilts seasonal odds toward above-average Pacific Northwest precipitation overall, though September totals remain sensitive to the timing and strength of subsequent systems. Historical data show a 1.6-inch climatological mean with high interannual variability, while recent dry Septembers underscore the potential for lighter accumulations if later-month ridging develops. Traders weigh these early rains and ENSO signals against forecast uncertainty in the 30-day window.