Current forecasts from multiple models place Mexico City’s maximum temperature near 26°C on August 16, aligning with the market’s leading 58% implied probability for that outcome. The city’s high elevation of roughly 2,240 meters keeps daytime highs well below lowland averages, while the ongoing rainy season brings frequent afternoon cloud cover and showers that limit solar heating and introduce variability. Recent runs from agencies such as the Met Office and international ensembles converge on 25–27°C maxima, with 26°C as the modal value; lighter probabilities for 25°C or 27°C reflect remaining uncertainty in exact cloud timing and precipitation intensity. Historical August maxima cluster around 24–25°C, so today’s slightly warmer guidance supports the observed market distribution. Updated model guidance and official Servicio Meteorológico Nacional observations later in the day remain the key near-term catalysts.