Forecast models for Beijing on June 15 show a narrow spread centered on 28–31°C, with ensemble guidance from major centers reflecting modest uncertainty over cloud cover, light precipitation chances, and boundary-layer mixing that could cap or boost afternoon peaks by 1–2°C. Official climatology places mid-June averages near 30°C, yet current runs indicate possible stabilization near 29°C as the most probable outcome, consistent with market-implied odds clustering tightly around that level. Urban heat-island effects and measurement site specifics add further resolution sensitivity, while the absence of strong synoptic forcing keeps probabilities distributed rather than concentrated. Updated model runs and local observations over the next 24 hours will likely refine the final distribution before official verification.