Official National Weather Service observations recorded a maximum temperature of 83°F in Denver on October 3, 2026, at 1:33 PM MDT, aligning precisely with the market's dominant 82-83°F outcome. This value exceeded the 1991-2020 normal of 71°F by 12°F under clear, dry conditions with low humidity and light winds, consistent with pre-event model consensus and seasonal warming trends. Trader positioning reflects high confidence in verified station data from Denver International Airport. A realistic challenge would require a post-analysis revision to the official reading, though such adjustments are rare once preliminary climatological reports are issued.