**Current forecasts for Buenos Aires on September 26 indicate a nighttime low near 14–15°C under easterly flow, with model outputs showing modest spread driven by cloud cover and wind speed.** Easterly winds advect milder maritime air while increasing cloudiness can limit radiative cooling, keeping minimums higher than clear-sky potential; conversely, lighter winds or clearer breaks overnight could allow greater surface cooling toward 12°C or below. Official guidance from sources such as the Servicio Meteorológico Nacional and global ensembles (GFS, ECMWF) currently clusters around this range, yet small differences in timing of any drizzle or wind shift create the observed market split between sub-10°C and 20°C+ outcomes. New model runs and updated observations overnight will likely narrow the range before resolution.