**Trader sentiment for Mexico City's July 5 maximum temperature reflects high short-term forecast uncertainty within the city's typical July climatology.** Official guidance and model consensus point to highs centered on 22–25°C, driven by the peak North American monsoon period that favors afternoon convective showers and thunderstorms at the city's 2,240 m elevation. These storms often limit peak heating by increasing cloud cover and evaporative cooling, though morning sunshine or delayed precipitation can allow brief excursions to 25–26°C. Recent model runs show light northeasterly flow and scattered showers, keeping outcomes tightly clustered around the historical July average of ~23–24°C. Resolution hinges on precise timing of convective initiation and any revisions in the next 24–48 hours from agencies like Mexico's SMN.