Recent forecast model consensus from sources including AccuWeather and Ventusky points to a Mexico City high near 25–26°C on August 19, aligning with the market’s tight split between those two outcomes. At the city’s high elevation, typical August daytime maxima average 24–26°C under the influence of the rainy season, when afternoon cloud build-up and showers often cap peak temperatures. Current guidance shows partly cloudy skies with scattered showers possible, introducing minor uncertainty around exact solar heating and thus whether the high settles at 25°C or edges to 26–27°C. Traders appear to weigh these short-range variables against seasonal baselines, with no recent extreme-heat anomalies shifting the outlook.