Current forecasts from global and regional models place Guangzhou's June 12 maximum near 31–32 °C under a subtropical ridge with moderate humidity near 70–80 % and scattered afternoon convection. This range aligns with the market's near-even odds on 31 °C and 32 °C, as slight differences in cloud cover or timing of showers can shift the daily peak by 1–2 °C. Historical June averages of 30–32 °C and the absence of anomalous heat or strong frontal systems keep probabilities concentrated in this narrow band, with lower odds on 30 °C or 33 °C reflecting model spread and typical variability in early-summer monsoon conditions. Updated runs from the China Meteorological Administration and international ensembles will refine the outcome ahead of resolution.