Recent model consensus points to increased cloud cover and scattered showers or thunderstorms over São Paulo on August 7, driven by a passing frontal boundary that favors the lower end of the distribution. These conditions are expected to limit daytime heating compared with the long-term August climatology of 23–25 °C maxima, while recent days have featured brief warmer anomalies under clearer skies. Forecast spread across regional models centers on the precise timing and coverage of precipitation, which directly affects whether the official INMET or airport observation registers at or below 22 °C versus the mid-20s. Traders therefore assign the highest implied probability to the coolest bin, reflecting both the near-term synoptic setup and the narrow window before final temperature readings are recorded.