Recent National Weather Service and private model guidance points to a high of 83–86°F in Denver on October 9 under mostly sunny skies and light southwesterly flow, keeping the 84–87°F range as the market’s tightest consensus. Persistent high pressure and very dry air have supported strong daytime heating over the past several days, with October 7–8 highs already reaching the mid-80s. Subtle differences among forecast highs hinge on exact cloud cover timing, boundary-layer mixing depth, and any weak downslope warming; ensemble spreads remain modest but allow for a tail risk of slightly cooler readings if marine or upslope influences increase. The next NWS update and 12Z model runs on October 8 will likely tighten resolution criteria around the 85°F threshold.