Recent National Weather Service and model guidance indicate a cold front will shift Atlanta into cooler, drier northeasterly flow by Monday, October 5, following heavy weekend rainfall and above-normal warmth. Overnight lows are projected in the upper 50s to low 60s under partly cloudy skies, supporting the near-even market split between sub-60°F and much warmer outcomes. Radiational cooling potential after frontal passage, modulated by residual moisture and wind speeds, creates the primary uncertainty, as even modest cloud cover or lingering humidity can limit temperature drops by several degrees. Updated short-range model runs and surface observations through the weekend will refine the exact minimum at the official Atlanta station before resolution.