**Official observations from Mexico City's meteorological network recorded a daily maximum of exactly 24°C on September 6, 2026.** This outcome aligned closely with Servicio Meteorológico Nacional forecasts issued the prior day, which projected a maximum range of 24–26°C amid partly cloudy skies, afternoon showers, and typical easterly winds. At the city's high elevation of roughly 2,240 meters, daytime heating is moderated by frequent cloud cover and convective rainfall during the early rainy-season transition, keeping September averages near 23°C. Trader consensus at 100% for 24°C reflects the rapid incorporation of verified station data shortly after the observation window closed, with minimal scope for revision unless post-processing adjustments alter the official high. Rare challenges could arise only from station-specific anomalies or delayed quality-control corrections, both uncommon for this well-monitored urban site.