Trader consensus centers on 17°C as the leading outcome for Buenos Aires’ October 16 high, with 41% implied probability, driven by persistent cloud cover, light drizzle, and southerly flow from an Atlantic frontal system that has suppressed daytime heating. Official Servicio Meteorológico Nacional guidance and multiple model runs indicate a maximum near 17–18°C under mostly overcast skies, with only modest warming expected despite a slight afternoon improvement in precipitation chances. Cooler boundary-layer air and reduced insolation align with recent observations of 17–19°C highs on October 15. Resolution hinges on final 24-hour observations, and any unexpected clearing could shift probabilities toward 18°C or higher.