Forecast uncertainty around Seoul's July 1 high centers on typical early-monsoon conditions, with models showing highs clustered near 29–30°C amid scattered showers and high humidity. The Korea Meteorological Administration and global ensembles indicate daytime peaks moderated by cloud cover and potential afternoon convection, while the urban heat island effect could push readings slightly higher under clearer intervals. Historical July averages near 29°C provide context, yet short-range variability in steering patterns and precipitation timing keeps 28–31°C outcomes closely competitive. Updated model runs and official briefings over the next 48 hours will likely refine these probabilities as land-sea breeze influences and moisture convergence become clearer.