Current forecast models indicate mild late-winter conditions for Buenos Aires on August 20, with daytime maxima likely near 18–19°C due to variable southerly flow and limited cold-air advection. Traders price 19°C highest at 36.5% and 18°C at 30% because ensemble guidance shows modest warming potential from northerly winds or reduced cloud cover, offset by typical August frontal passages that can cap highs at 17°C or allow brief spikes toward 20°C. Historical climatology places the monthly average high around 15–17°C, underscoring how small shifts in steering patterns or timing of any weak systems create the narrow spread among leading outcomes. Updated model runs and official Servicio Meteorológico Nacional guidance expected overnight will refine resolution thresholds.