Recent forecasts from multiple meteorological sources, including the Met Office and Yr.no, indicate a high of 11–12°C for Buenos Aires on August 21 under mostly clear to partly cloudy skies with persistent southerly winds of 6–9 m/s. These conditions stem from a cooler air mass advected northward behind a recent frontal passage, suppressing daytime warming relative to seasonal norms near 15–16°C. Model consensus shows limited variability, with afternoon peaks constrained by the stable high-pressure regime and minimal solar heating in mid-winter. Traders appear to weigh these official guidance trends heavily, concentrating implied probabilities on the 12°C and 13°C outcomes while discounting warmer or colder extremes absent any significant forecast shifts.