Forecasts from the National Weather Service and other models project Atlanta’s overnight low on August 27 around 71–74 °F amid increasing cloud cover, humidity, and showers tied to a trough moving through the Southeast. Persistent moisture and reduced radiative cooling under mostly cloudy skies limit overnight temperature drops compared with clearer recent nights. This setup explains trader emphasis on the 78–79 °F bin as the leading outcome, while the sizable share for 82 °F or higher reflects bets on even stronger warm advection or heavier cloud insulation. Historical August minima near 70 °F provide context, but the immediate pattern shift raises the floor relative to drier conditions earlier in the month. Updated model runs and evening observations will clarify whether clouds hold or clear enough for deeper cooling before the daily minimum is recorded.