Forecast models from sources including the National Meteorological Center and international agencies indicate a high near 30–32°C for Zhengzhou on August 18, driven by persistent subtropical high pressure, high humidity, and light southerly flow that limits daytime mixing while allowing for scattered showers or overcast skies. These conditions align with late-summer climatology in the North China Plain, where average August maxima hover near 31–33°C but frequently moderate under cloud cover or light precipitation, explaining why the 32°C-or-higher and 30°C outcomes command the strongest market-implied probabilities. Recent model runs show little shift from yesterday’s guidance, with no incoming cold fronts or significant moisture surges expected before the 24-hour verification window closes, keeping trader consensus anchored on the upper end of the typical daily range.