Official forecasts from the National Weather Service and multiple models converge on an Atlanta high in the upper 80s for August 29 amid partly sunny skies, easterly flow around 5 mph, and a 30-40% chance of afternoon showers or thunderstorms driven by typical late-summer instability and boundary-layer moisture. This setup favors the closely matched 88-89°F and 86-87°F market bins, as scattered convection can either limit peak heating through cloud cover or allow brief clearing that pushes readings toward 89°F depending on timing and coverage. Historical climatology shows late-August averages near 87°F, while dew points near 70°F and modest winds sustain heat indices above 90°F even if the dry-bulb maximum stays modest. Real-time observations and updated model runs through the afternoon will refine the exact bin as the day unfolds.