Mexico City's high-elevation basin location at roughly 2,240 meters, combined with peak rainy-season conditions in July, keeps daytime maxima tightly clustered near the long-term average high of 23–24 °C. Official guidance and ensemble forecasts for July 11 point to partly cloudy skies with scattered afternoon convection and light showers, which can limit peak heating through increased cloud cover, higher humidity, and evaporative cooling. These factors create the narrow spread reflected in trader pricing, where 24 °C, 25 °C, and 26 °C together capture over 70 % of implied probability. Differentiation hinges on the precise timing and intensity of any storms, surface wind patterns, and the official station reading used for market resolution. Updated model runs and morning observations on July 11 will likely refine the outcome before resolution.