**Recent record October heat in Seoul (peaking at 30.1°C on Oct 12) and limited early-month rainfall have kept cumulative precipitation low so far, with only scattered light showers totaling well below the 52 mm historical average.** An approaching frontal system is forecast by the Korea Meteorological Administration to bring 5–50 mm across the Seoul area on Oct 13, tapering by afternoon, before cooler, drier northerly flow sets in. This positions mid-to-upper range totals (50–85 mm+) as leading outcomes, as typical October frontal passages can still add variable amounts over the remaining 19 days. Model consensus shows no major typhoon influence, supporting the market-implied odds favoring totals above 50 mm while acknowledging forecast uncertainty in longer-range precipitation.