**Forecast models from Argentine meteorological sources and international numerical weather prediction systems indicate a modest daily maximum near 12–13°C for Buenos Aires on August 18, driven by persistent cloud cover, light southerly flow, and limited solar insolation typical of Southern Hemisphere winter.** Recent observations show highs of 15–18°C earlier in the week giving way to cooler conditions, with model consensus pointing to suppressed afternoon warming under overcast skies and possible light precipitation. The tight clustering of market-implied probabilities around 13–14°C reflects trader assessment of forecast spread—small differences in boundary-layer mixing, timing of any clearing, or sea-breeze effects can shift the peak by 1–2°C—while historical August averages near 15–17°C provide context for the current cooler anomaly. New model runs and official updates from the Servicio Meteorológico Nacional remain the key near-term catalysts for any repricing.