Official National Weather Service observations placed Denver’s maximum temperature on June 13 in the 78–79 °F range, producing the market’s near-certain resolution. This value aligned with a cooler-than-climatological air mass under northwesterly flow, with afternoon dew points in the 40s limiting surface heating despite ample June sunshine. Model guidance issued 24–48 hours earlier had consistently signaled highs near or below the seasonal normal of 82 °F, and no late-day warming or downslope wind shift materialized to push readings higher. The only realistic challenge to this outcome would have been an unexpected observational revision in the final NWS Climatological Report or a station-specific microclimate anomaly not representative of the official DEN reading.