**Forecast consensus from NOAA-aligned sources and local meteorological models points to an overnight low in the upper 70s for Austin on September 2, 2026, driven by a persistent warm, moist air mass with light southerly flow and limited nocturnal radiative cooling.** Highs near 100°F the prior day, combined with dew points in the low-to-mid 70s, sustain elevated minimum temperatures, while partly cloudy skies and a slight afternoon thunderstorm risk further suppress cooling. Historical climatology shows an average low near 71°F, but current conditions reflect late-summer heat typical of the region, with recent model runs showing minimal day-to-day variability in the 24–48 hour window. Traders appear to balance this guidance against residual uncertainty in boundary-layer mixing and any localized convective outflows that could nudge readings slightly lower or higher, keeping probabilities clustered around the 74–79°F range while assigning lower weight to extremes outside that band. Updated National Weather Service briefings and evening model cycles will provide the next key inputs before resolution.