Late August's remaining convective showers and potential weak frontal systems are the main drivers keeping Seoul's monthly precipitation odds tightly clustered near historical averages of 250-300 mm. With the East Asian monsoon waning and typhoon tracks favoring southern regions this season, Seoul has seen intermittent moderate rainfall rather than prolonged heavy events, leaving cumulative totals uncertain as forecasters from the Korea Meteorological Administration update models daily. This uncertainty sustains near-even implied probabilities across the 150-300 mm bands, while lower outcomes reflect drier steering patterns observed so far and higher bins await any late-month intensification.