Latest National Weather Service and private model guidance shows NYC under high pressure with mostly sunny skies on August 20, favoring radiative heating that supports afternoon highs in the low-to-mid 80s. This aligns with climatological August averages near 83–84 °F at Central Park while remaining below heat-wave thresholds. Key differentiators among the tightly bunched 78–85 °F bins include sea-breeze onset timing, boundary-layer mixing depth, and any late-day cumulus development that could cap temperatures. Traders are weighting the consensus range most heavily because ensemble spreads remain modest and no strong frontal passage or tropical moisture is expected before resolution. Updated NHC and local WFO guidance tomorrow morning will provide the final observational inputs for market resolution.