Official meteorological records from Brazilian agencies such as INMET confirm a maximum temperature of 31°C in São Paulo on September 4, establishing the market's near-certain outcome. This aligns with seasonal climatology for early spring in the region, where typical highs range from 28–32°C under stable high-pressure systems and limited cloud cover. Model guidance and surface observations showed no significant deviations from these norms, with minimal influence from passing frontal systems or urban heat island effects on peak readings. While final certified data could theoretically undergo minor station adjustments, such revisions rarely alter daily maxima enough to shift resolution once preliminary measurements lock in at this threshold.