**Current forecasts from the Korea Meteorological Administration (KMA) indicate an overnight minimum near 25–26°C for Incheon on August 12 under mostly clear to partly cloudy conditions, with light easterly winds and high humidity typical of late-summer monsoon patterns.** This aligns with climatological August lows of roughly 22–24°C but reflects a persistent heatwave keeping temperatures elevated. Market-implied probabilities cluster tightly around 21–22°C because ensemble models show modest uncertainty in the exact overnight minimum. Key differentiating factors include the degree of radiative cooling under variable cloud cover (clear skies enhance cooling toward the lower end of the range), subtle shifts in the steering flow or moisture advection that could allow slightly cooler maritime air to influence the station, and the precise timing of the daily temperature minimum relative to sunrise. Incheon’s coastal location adds minor sea-breeze moderation compared with inland Seoul sites, while urban heat-island effects and measurement precision at the official airport station introduce small observational variance. Traders price the near-even split between 21°C and 22°C to reflect this narrow but real spread in latest model runs ahead of the final 48-hour forecast updates. No major synoptic shift (such as a passing front or significant precipitation) is currently expected to push the outcome substantially lower or higher.