Trader consensus favors a 23–24°C high for Mexico City on July 8 because official forecasts and ensemble models place the maximum in that narrow band amid the North American monsoon’s influence. Afternoon convective clouds and showers, common in July at 2,240 m elevation, limit peak insolation and promote evaporative cooling, keeping most days from exceeding the mid-20s. Recent model runs show modest disagreement on exact cloud timing and rainfall intensity, which accounts for the tight spread across 22–25°C outcomes. Historical July climatology reinforces this clustering, with 22–26°C encompassing the large majority of observed daily maxima. Updated CONAGUA and global guidance ahead of the 24-hour window will be the key variable for final resolution.