Recent forecast models indicate a likely daily minimum near 13–15°C in Buenos Aires on October 5 under mostly overcast skies and light northerly winds, reflecting transitional spring conditions in the Southern Hemisphere. Multiple sources, including global and regional models, show modest diurnal ranges with highs around 20–22°C, consistent with suppressed radiational cooling from cloud cover and marine air influence. The near-even market-implied odds between 9°C or below and 19°C or higher highlight genuine uncertainty in the precise minimum, driven by potential model spread in boundary-layer mixing, dew-point depression, and any late adjustments from a passing weak front. Updated runs from agencies like the Servicio Meteorológico Nacional or international ensembles will clarify whether cooler advection or clearer skies alter the trajectory before resolution.