Current National Weather Service guidance and short-range model runs point to an overnight low of 72–75°F in Atlanta on August 21, reflecting a warm, humid airmass with dew points in the upper 60s to low 70s that limit radiational cooling under partly cloudy skies and scattered thunderstorm chances. High moisture content and weak steering flow sustain elevated minimum temperatures relative to August climatology near 70°F, while any clearer breaks or localized outflow boundaries could allow brief dips toward the low 70s. Trader consensus clusters around the 72–77°F bins because forecast spreads remain modest ahead of the next model cycle and evening observations, with resolution hinging on the official Atlanta airport minimum.