Recent ensemble forecasts from major models, including guidance aligned with the China Meteorological Administration, indicate a daytime maximum in Guangzhou on June 16 near 28–30 °C under thundery showers and elevated cloud cover that limits insolation. In this subtropical monsoon regime, high boundary-layer moisture and southeasterly flow favor scattered convection, moderating peak temperatures below the June climatological average of ~31 °C at urban stations. The tight clustering of market-implied probabilities around 29–30 °C (combined ~55 %) reflects this model consensus and modest uncertainty in convective timing, while lower probabilities for 31 °C or higher account for the chance of localized clearing or delayed showers allowing brief additional warming. New model runs and official briefings over the next 48 hours will refine the outlook ahead of resolution.