Latest forecasts for Chengdu on June 18 point to mostly cloudy or overcast skies with possible light showers or drizzle, which limit surface heating and keep maximum temperatures centered in the 29–31°C range. The Sichuan Basin’s high humidity and frequent cloud cover during early summer further suppress peaks relative to clear-sky potential, aligning with climatological norms where June highs average near 29–30°C. Ensemble model guidance shows modest spread tied to the precise timing and coverage of any precipitation, creating tight differentiation among the leading market outcomes. Traders appear to weigh these variables heavily, with implied probabilities reflecting ongoing uncertainty until final observational data resolves the exact daily maximum.