Real-time meteorological observations and forecast model consensus from agencies monitoring East Asian weather patterns have locked in a daily maximum of 31°C for Wuhan on September 12, driving the near-100% market-implied probability on that exact outcome. Surface station readings, satellite-derived temperatures, and numerical weather prediction runs show stable high pressure with light winds and minimal cloud cover allowing daytime heating to this precise threshold, consistent with late-summer climatology for the region. Minor variations in station siting or final official rounding could theoretically shift the recorded high, though current data streams indicate negligible risk of deviation outside the 31°C bin.