**Forecast models currently project an overnight low near 27–28°C for Shenzhen on September 29 under partly cloudy skies and light southwest winds.** This places the most likely minimum in the narrow band around the 29°C or 28°C outcomes, consistent with typical late-September subtropical conditions where high humidity and urban heat retention limit radiative cooling. The closely matched market-implied probabilities across 33°C or higher, 29°C, and 23°C or below reflect genuine forecast uncertainty in the precise minimum rather than any major shift in expected conditions. Minor differences in model runs, local measurement sites, or slight variations in cloud cover and wind speed can shift the recorded low by 1–2°C. No incoming cold air mass or significant precipitation is indicated in the short-term guidance that would drive temperatures toward the colder buckets, while the daily high near 33°C explains interest in the upper range. Traders are effectively pricing the resolution risk around the exact overnight minimum under stable warm, humid conditions typical for the region.