Recent forecast models indicate a strong southwesterly wind shift arriving overnight, potentially advecting cooler polar maritime air into the region and enhancing nocturnal radiative cooling under clearing skies. This setup creates substantial uncertainty around the minimum, with some ensemble members projecting lows near or below 7°C while others retain milder conditions near 17°C or higher due to variable cloud cover and wind strength. Key differentiators include the precise timing of the frontal passage, surface pressure gradients driving the cold-air outbreak, and local urban heat-island effects in Buenos Aires. Traders are closely monitoring updated runs from global models ahead of the overnight period, as small shifts in these variables can swing the outcome across the tightly contested probability bands.