Recent forecasts for Guangzhou indicate a high near 28–30°C on October 5 as a weak cold-air surge from the north brings northeasterly winds of 10–20 km/h, increased cloud cover, and a 3–5°C drop from earlier in the week. Official guidance and ensemble models show modest spread in peak readings depending on the exact timing of clearing and boundary-layer mixing, with most runs clustering around 29°C under partly cloudy conditions. This narrow distribution explains the tight market clustering between 28°C and 30°C, where small differences in daytime insolation or residual moisture can shift the daily maximum by 1°C. Updated model runs and local observations over the next 48 hours will likely refine the precise peak before resolution.