Mexico City's high temperature on August 22 will likely hinge on afternoon cloud cover and scattered showers typical of the rainy season, with official forecasts from sources like the National Meteorological Service and international models converging on 21–24°C. At 2,240 meters elevation, reduced atmospheric pressure and incoming moisture limit daytime heating compared to lower-altitude sites, while persistent humidity and thunderstorms—often peaking after solar noon—further cap maxima by blocking insolation. Trader emphasis on the closely matched 23°C and 24°C outcomes reflects model spread in precipitation timing and intensity, where earlier or heavier rain favors the lower end and any delayed or lighter activity allows brief warming toward 24°C. Historical August averages near 23°C provide context, but short-term variability in steering patterns keeps probabilities fluid until updated model runs.