Recent National Meteorological Service forecasts and regional model runs point to a daytime high of 24–26°C in São Paulo today, driven by warmer, drier air advection behind yesterday’s cold-front passage and a building high-pressure ridge. Seasonal climatology places the May average high near 23°C, so current conditions represent a modest positive anomaly that aligns with the market’s heaviest volume on 25°C. Updated INMET guidance shows minimal cloud cover and light winds through afternoon, supporting modest further warming before evening cooling begins. No significant model disagreement exists on the peak value, keeping the 24–26°C band as the clear consensus range while traders await the final official maximum reading.