Current short-term forecast models from the National Weather Service point to clear skies and light easterly winds overnight into September 15 as the main driver keeping Atlanta’s minimum temperature in the upper 60s to low 70s, with trader consensus splitting closely across the 67–75°F range due to small variations in radiative cooling and boundary-layer mixing. High pressure dominating the Southeast limits cloud cover and moisture, allowing efficient heat loss after daytime highs near 89–90°F, while dew points in the mid-60s and 5–10 mph winds moderate how far temperatures fall before dawn. Historical September averages place the typical low near 66°F, yet persistent warmth this week has shifted implied probabilities toward milder outcomes; any increase in humidity or slight wind shift could tighten the range further. Updated model runs and official NWS briefings tomorrow morning will provide the key data points for refining these thresholds before resolution.