Forecast models from sources including the National Weather Service and private agencies converge on a high of 92–95°F for Austin on September 26, driven by persistent warm, humid air under light southeast winds and increasing afternoon cloud cover that limits full solar heating. This places the day several degrees above the 1991–2020 climatological average high of 88°F but below peaks seen earlier in the month amid an unusually warm September pattern. The market’s concentration on 92–95°F brackets reflects this consensus, with lower probabilities assigned to 96°F+ outcomes that would require clearer skies and stronger mixing than currently indicated. Updated model runs overnight will refine the exact maximum as surface observations and steering patterns evolve.