**Short-term meteorological forecasts for Buenos Aires on September 2, 2026, show the daily minimum temperature most likely falling in the 9–13°C range, with model outputs clustering near 10–11°C under partly cloudy to clearing skies and light northerly to variable winds.** This keeps probabilities tightly bunched across 8–13°C outcomes because ensemble spreads in regional and global models (such as those feeding public forecasts) still allow modest shifts from radiative cooling overnight or brief frontal influences. In early Southern Hemisphere spring, the city’s subtropical latitude produces nights when clear skies and light winds enable efficient surface heat loss, pushing minima toward the lower end of the distribution, while increased cloud cover or onshore flow moderates cooling and supports readings nearer 12–13°C. Current guidance from multiple sources points to an overnight low near 10–11°C early on the 2nd, followed by daytime warming to the upper teens, with only low odds of stronger cold advection that would reach 7°C or below. Traders are therefore pricing the narrow window around typical late-winter/early-spring climatology while acknowledging the remaining uncertainty in the final 48-hour model runs.