Recent National Weather Service and model guidance point to a warm air mass with southerly flow and mostly sunny conditions supporting afternoon highs near 86–88°F at Central Park, the official NYC measurement site, as the primary driver of the 46.5% and 32.5% market-implied probabilities for the 86–87°F and 88–89°F bins. Ensemble forecasts show modest uncertainty from possible early convection or increasing cloud cover that could cap the maximum slightly below 90°F, consistent with the low 4.5% odds for 90–91°F. This aligns with the broader August pattern of above-normal temperatures from the Climate Prediction Center and recent Central Park readings in the mid-80s, with minimal risk of extremes given typical late-summer steering patterns and dew points. Updated model runs and NWS briefings on August 12–13 will refine the final range.