Current forecast models from agencies like Brazil's CPTEC and global ensembles point to a cool June day in São Paulo driven by a passing cold front and increased cloud cover, keeping daytime highs likely between 14–16°C. Recent observations show temperatures several degrees below seasonal normals around 22°C, with light winds and possible showers limiting solar heating and favoring the market's leading 15°C outcome at 30.5% implied probability. Model spread on exact maximums—sensitive to timing of frontal passage and boundary-layer mixing—explains the tight clustering around 14°C and 16°C, while historical June variability underscores why traders assign lower weight to extremes. Updated runs ahead of resolution will refine these projections.