Recent forecasts for São Paulo indicate a minimum temperature near 18–19°C on October 12, with scattered showers, high humidity, and persistent cloud cover limiting overnight radiative cooling. These conditions, driven by a moist easterly flow and weak frontal influences, reduce the likelihood of deeper nighttime drops while capping daytime maxima around 26–28°C. Model consensus shows limited spread in boundary-layer temperatures, keeping probabilities tightly clustered across 16–22°C bins as traders weigh small variations in precipitation timing and wind speed that could shift the exact low by 1–2°C. Updated guidance from regional models will refine the overnight minimum before resolution.