Forecast models from sources like Open-Meteo and the National Meteorological Service indicate a minimum near 13°C for Buenos Aires on October 15, 2026, driven by persistent southeast winds advecting moist maritime air, widespread cloud cover, and light rain that suppress nocturnal radiative cooling. This setup aligns closely with the October climatological average minimum of about 13°C while limiting potential for sharper drops. Trader consensus clusters on 12–14°C outcomes because small shifts in wind timing, rainfall duration, or partial clearing could alter the overnight low by 1–2°C. Official station observations from Aeroparque or the central observatory will resolve the market once the full 24-hour period ends.