Recent forecasts from the National Weather Service and other models indicate a high near 78–80°F for New York City on August 21, aligning with the tightly clustered market-implied odds around 78–81°F. Thunderstorms and heavy rain on August 20 have increased soil moisture and cloud cover, promoting evaporative cooling and limiting daytime heating under partly sunny skies. Northeasterly winds of 5–10 mph advect cooler, more humid maritime air from the Atlantic, while the mid-August climatological baseline of roughly 79–82°F highs provides context for modest deviations. Model consensus shows limited spread due to stable steering patterns and no strong warm-air advection, keeping resolution likely within the 76–83°F range absent unexpected clearing or wind shifts.