Official forecasts from the National Weather Service and multiple models converge on a high near 100–101°F for Austin on August 29 under continued high-pressure ridging, light southerly flow, and minimal cloud cover. Recent model runs show only modest day-to-day variability, with dew points in the upper 60s supporting heat indices near 107°F but little risk of significant cooling from convection or frontal passage. Historical late-August climatology places the normal high at 96°F, so the current pattern represents a modest positive anomaly sustained by subsiding air and downslope warming. With the forecast window now under 24 hours, the main uncertainty remains localized boundary-layer mixing and exact peak timing, keeping trader focus on whether readings settle in the upper 90s or push into the low 100s.