Recent forecast models from sources including the Met Office and regional analyses project Mexico City overnight lows of 12–14°C on October 3, driven by moderate cloud cover and light rain that limit nocturnal radiative cooling at the city’s 2,240-meter elevation. Historical October averages near 11–12°C provide baseline context, yet variable steering patterns and urban heat effects create divergence between cooler scenarios below 10°C and milder ones above 15°C. Trader sentiment reflects this uncertainty, with near-even odds on extreme tails underscoring the influence of short-term atmospheric moisture and wind shifts on minimum temperature resolution. Updated model runs over the next 48 hours will refine these projections.