Official National Weather Service observations recorded a minimum temperature of 52°F in Denver on October 12, 2026, aligning closely with the market's dominant 54-55°F outcome at 99.6% implied probability. This positioning reflects trader assessment of warm daytime conditions peaking near 82°F amid a prolonged early-October heat wave, followed by gradual evening cooling under partly cloudy skies and moderate northerly winds. Model consensus from NWS and NOAA had consistently projected overnight lows in the low-to-mid 50s, well above the 1991-2020 normal of 38°F and far from historical October 12 records near 10°F. The near-certain market odds account for limited scope for measurement revisions or alternative station data, though minor discrepancies in official rounding or sensor timing could theoretically shift resolution if thresholds prove stricter than anticipated.