Recent forecasts from multiple models indicate Sao Paulo's October 8 minimum will likely fall near 17–21°C, driven by a transitional spring pattern with clearing skies after recent overcast, rainy conditions that suppressed daytime highs. Overnight lows hinge on radiational cooling rates, humidity levels near 90–95% at dawn, light easterly winds, and any lingering cloud cover that could limit temperature drops. Model spreads create the market's near-even split between sub-14°C and 23°C-plus scenarios, as small shifts in frontal boundaries or subsidence strength could alter the daily minimum by several degrees before resolution. Updated runs from agencies like INMET and international ensembles will clarify steering patterns and boundary-layer conditions over the next 48 hours.