A strengthening El Niño, with NOAA’s Climate Prediction Center assigning over 90% odds of a very strong event this fall and winter, stands as the dominant influence on early-season snow timing. This pattern favors a southward-shifted storm track and above-normal temperatures across much of the southern and eastern United States, which historically correlates with delayed first measurable snowfall (0.1 inch or greater) in lower-elevation cities while potentially favoring earlier high-elevation events in the northern Rockies or Cascades. Current September conditions remain above average in temperature for many regions, consistent with model guidance showing limited cold-air intrusions through mid-month. Traders should monitor updated CPC monthly and seasonal outlooks, along with ensemble forecasts from the GFS and ECMWF, for shifts in temperature and precipitation anomalies that could accelerate or postpone the first qualifying accumulation at official stations. Historical median first-snow dates provide useful baselines but vary sharply by latitude and elevation.