Current forecast models from sources like GFS and regional analyses indicate overnight lows in São Paulo on October 13 around 17–20°C amid persistent cloud cover, scattered thunderstorms, and a frontal boundary enhancing moisture and moderating temperatures. This setup, with easterly to northerly flow and high humidity, positions the 17–20°C range as the leading market-implied outcomes near 33–34% each. Trader sentiment reflects model consensus on these values while assigning 49.5% to 14°C or below due to potential for localized cooling or forecast revisions overnight. Upcoming model runs and INMET updates will clarify intensification or steering patterns before resolution. Historical October minima in the city typically range 15–18°C, providing context for the observed clustering.