**Trader sentiment for Mexico City's July 4 maximum temperature centers on the 24°C outcome (34% implied probability), followed by 25°C (19.5%) and nearby values, reflecting the city's typical July climatology amid high forecast uncertainty.** Mexico City sits at roughly 2,240 meters elevation in a highland basin, where July falls in the core of the rainy season. Daily highs average near 23–24°C (74°F), with frequent afternoon convection driven by daytime heating, high humidity, and orographic lift from surrounding mountains. Official forecasts from sources like AccuWeather and BBC Weather currently point to a high around 24°C on July 4, accompanied by light rain showers and a gentle northeasterly breeze, consistent with the market's modal outcome. Key variables shaping the distribution include the timing and intensity of convective storms, which often peak after midday and can cap temperatures through cloud shading, evaporative cooling, or earlier onset of precipitation. Clearer mornings with stronger insolation favor the upper tail (26–27°C), while thicker cloud cover or earlier/heavier rain pushes outcomes toward 23°C or below. Model consensus remains modest because short-range guidance for convective initiation in the region carries inherent spread, and new observational data or updated runs can readily shift probabilities. Historical July maxima rarely exceed 28°C or fall below 20°C under normal conditions, underscoring why the market shows a broad but centered distribution rather than a sharp peak.