Recent forecasts for Mexico City indicate a high of 19–21°C on October 9 amid widespread cloud cover and moderate to heavy rain, with official and ensemble models showing peaks near 19–20°C during any brief afternoon breaks. Persistent precipitation and high humidity limit solar heating, keeping daytime maxima below the seasonal average of roughly 22–24°C. Model differences center on exact cloud thickness and the timing of any partial clearing, which can shift the daily maximum by 1–2°C. This uncertainty, combined with the narrow spread between 18°C and 19°C outcomes in current trader pricing, reflects the sensitivity of the peak reading to small variations in insolation and boundary-layer mixing under the prevailing wet pattern. Updated model runs and observational data over the next 48 hours will likely refine these probabilities.