**Current National Weather Service and model guidance for Denver on August 26 projects a mostly sunny morning with highs in the mid-to-upper 80s before afternoon convection develops, producing a 40–50% chance of thunderstorms after noon.** This timing creates the main uncertainty: stronger or earlier storms can cap temperatures near 82–85°F through reduced insolation and evaporative cooling, while delayed or weaker activity allows peaks closer to 86–89°F. Recent days have featured similar instability with highs of 89–93°F and scattered storms, consistent with late-August monsoon moisture and typical Front Range diurnal heating. Ensemble spreads in high-resolution models reflect modest differences in boundary-layer moisture and steering winds that determine storm initiation timing—the key variable separating the tightly bunched 25% outcome bins. Traders appear to be pricing this forecast range directly, with lower probabilities assigned to extremes outside 80–89°F given the current consensus. Updated NWS briefings and afternoon model runs on the 25th will likely sharpen the distribution ahead of resolution.