Recent ensemble forecasts for Chengdu on July 17 show maximum temperatures clustered around 32–34 °C, reflecting uncertainty from variable cloud cover, monsoon-driven humidity, and potential afternoon convection within the Sichuan Basin. The basin’s topography often traps heat and moisture while steering patterns from the western Pacific subtropical high modulate daytime peaks; clearer skies could push readings toward 35 °C or higher, whereas scattered showers or thicker cloud decks would cap them near 32 °C. Historical July averages near 30–31 °C provide context, yet interannual variability and urban heat-island effects widen the plausible range, leaving traders assigning roughly equal weight to the leading outcomes until the next high-resolution model updates arrive.