Forecast models from the National Weather Service and other sources converge on a Denver high near 87–89°F for August 25, 2026, driven by a zonal upper-level flow that allows daytime heating while scattered afternoon thunderstorms introduce variability in cloud cover and timing. Recent area forecast discussions note temperatures settling toward seasonal normals after warmer conditions earlier in the period, with 30–40% storm chances potentially limiting peak readings if convection develops earlier. This uncertainty between the leading 86–87°F and 88–89°F bins stems from differences in moisture advection, boundary-layer mixing, and exact storm initiation along the Front Range, typical for late-summer monsoonal patterns. Official observations at Denver International Airport will determine resolution.