Forecast uncertainty for Wuhan's minimum temperature on September 2 centers on variable steering patterns and moisture from the East Asian monsoon trough, with ensemble models from the China Meteorological Administration and global systems showing a broad spread between 20–27°C. Recent high-pressure ridging has kept daytime maxima elevated, but an approaching mid-latitude trough and potential weak frontal passage introduce cooling risks that differentiate the closely matched market-implied odds near 22–26°C from lower-probability outcomes below 20°C. Local Yangtze Valley topography and urban heat-island effects further modulate overnight lows, while model disagreement on exact timing and intensity of any precipitation or wind shift sustains the tight clustering of trader probabilities across the central range. Updated runs expected within 24 hours could narrow this spread ahead of resolution.