**Recent forecasts and observations for Austin, TX, show overnight lows stabilizing in the mid-to-upper 70s amid ongoing summer heat.** National Weather Service data from August 20 recorded a minimum of 74°F, while current model guidance and local forecasts point to similar readings for the night of August 21, with little change expected from persistent high temperatures, light winds, and elevated humidity that limit radiative cooling. Historical August climatology places typical daily lows near 75°F, with rare drops below 70°F, providing a baseline that aligns closely with the market's top outcomes. The 76-77°F bin leads at 40.5% implied probability, followed by adjacent ranges, reflecting trader consensus around these values as the most likely minimum based on the latest NWS and NOAA guidance. Warmer or cooler extremes carry sharply lower odds, consistent with the narrow variability seen in recent days and the absence of any significant frontal systems or precipitation that could alter the temperature trajectory before dawn.