Recent forecast models for Mexico City on October 1 show afternoon highs clustering near 24–25 °C under partly to mostly cloudy skies, with light southerly winds and scattered showers possible after midday. The city’s 2,240 m elevation and high humidity limit daytime heating, while October’s transition from the rainy season brings variable cloud cover that can suppress peak temperatures by 1–2 °C compared with clear-sky potential. Official guidance from agencies such as the Servicio Meteorológico Nacional indicates modest instability favoring brief convection, keeping the most likely maxima in the narrow 24–26 °C window reflected in current market-implied odds. Updated model runs this afternoon and any earlier-than-expected rainfall will be the key variables that determine whether the high settles at 24 °C or edges toward 25–26 °C.