Recent forecast models from multiple sources converge on a daily maximum of 25–26°C for Mexico City on September 26, reflecting typical late-September conditions moderated by widespread cloud cover and scattered showers that limit solar heating. Afternoon temperatures are expected to peak near 25°C amid light variable winds and humidity near 40–60%, with brief rain reducing the likelihood of brief spikes above 26°C. This aligns with historical September averages near 24–26°C while accounting for current steering patterns that favor persistent moisture. Market-implied odds favoring 25–26°C capture this consensus, though slight model spreads on cloud timing introduce modest uncertainty around the precise peak. Updated model runs and observational data through the morning will refine the final high.