Forecast models from sources like AccuWeather and the Hong Kong Observatory indicate typical July overnight minima near 26–28°C for July 20, driven by seasonal monsoon conditions, high humidity limiting radiative cooling, and limited cloud cover or rainfall expected. These align with historical averages of 26–27°C lows and normal-to-above-normal temperature outlooks for July–September 2026. Closely matched probabilities around 26°C and 28°C reflect genuine uncertainty in short-range model runs, where shifts in wind patterns, precipitation timing, or tropical disturbances could alter the exact minimum by 1–2°C before resolution. Upcoming daily updates from official monitoring will likely refine trader positions as the date approaches.