Near-term weather model consensus points to a highest temperature of 20–21°C in Mexico City on August 24, reflecting typical mid-rainy-season conditions where afternoon cloud buildup and scattered thunderstorms moderate peak heating at the city’s 2,240-meter elevation. Daytime maxima historically average near 24°C in August, yet frequent convection and reduced insolation often cap readings 3–4°C lower when storms develop early, aligning with the market’s tight spread between the top two outcomes. Recent model runs show minor divergence in precipitation timing and coverage, which directly influences whether the daily high settles at 20°C or edges to 21°C, while lower-probability tails account for clearer or more suppressed scenarios. Traders weigh these atmospheric dynamics against climatological baselines, anticipating official observations from Mexico’s meteorological service to resolve the market.