Forecasts from the National Weather Service and ensemble models indicate Atlanta’s overnight low on August 30 will settle near 70–72°F under light southeast winds, high dew points near 71°F, and partly cloudy skies that permit modest radiative cooling after sunset. These conditions produce a narrow temperature range centered on the market’s three leading bins (74–75°F at 29.5 %, 72–73°F at 27 %, 70–71°F at 26 %), with the 68–69°F bin at 25 % reflecting residual uncertainty over exact cloud timing and boundary-layer mixing. Historical late-August climatology for Hartsfield-Jackson Airport shows similar minima when subtropical moisture and weak steering flow prevail, while any increase in afternoon convection or a slightly stronger nocturnal inversion could shift the recorded low by 1–2°F across adjacent bins.