The market-implied odds reflect official Met Office observations confirming a daily maximum of 22°C in London on October 4, with the peak already attained and no subsequent readings exceeding it. This outcome aligns with current atmospheric conditions, including southerly flow advecting milder air masses across southern England, pushing temperatures several degrees above the long-term October average of roughly 15–17°C. Forecast models from the Met Office and ECMWF converged on this value without notable spread in their final runs, and real-time station data show no measurement discrepancies or late-day surges capable of shifting the high. While unforeseen microscale effects remain theoretically possible before full daily reporting closes, the consensus data leave negligible room for alternative thresholds.