**Official National Weather Service observations confirm the daily maximum temperature in Denver reached exactly 74°F on September 20, 2026, at 3:08 PM MDT.** This places the outcome squarely in the 74-75°F range, aligning with the market's near-100% implied probability. The reading was 4°F below the 1991-2020 climatological normal of 78°F, with a minimum of 49°F and no measurable precipitation, consistent with a day of scattered thunderstorms that did not alter the peak. Late-September conditions featured typical high-pressure influence and light winds, keeping temperatures near seasonal baselines without the stronger warming or cooling anomalies that have produced outliers in prior years (such as the 94°F record in 2010). Traders' strong consensus reflects the convergence of pre-event forecast models and the final verified station data from Denver International Airport. Realistic challenges to this resolution would require an undetected station malfunction or post-hoc data revision by NOAA, both of which have negligible probability given cross-verified reports and the absence of any conflicting observations.