With forecasts from the Servicio Meteorológico Nacional and global models like ECMWF and GFS showing only modest spread for Buenos Aires on June 12, trader sentiment clusters tightly around 16–17°C as the most likely daily maximum. Southern Hemisphere winter conditions feature stable high pressure and limited moisture, producing typical highs near 15–18°C, but small differences in boundary-layer mixing, afternoon cloud cover, or wind direction can shift the peak by 1–2°C. Market-implied probabilities reflect this narrow uncertainty range rather than any single outlier event, with resolution hinging on the official 24-hour maximum recorded at the central observatory. Updated model runs tomorrow morning will likely narrow the spread further before the market settles.