Recent forecasts for Incheon on October 1 indicate a daytime high near 21–22°C under partly cloudy skies with northwest winds of 10–13 mph and building high pressure, consistent with early autumn cooling from seasonal radiative losses and reduced solar angles. Model consensus shows limited diurnal warming potential due to clear overnight conditions and moderate humidity, keeping peaks below typical late-September levels near 24°C. The near-even split between 21°C and 22°C implied probabilities reflects small uncertainties in peak timing and local microclimate effects around the airport station, with traders weighting the latest short-range guidance showing a slight downside bias from stronger advection. Updated model runs tomorrow morning will likely refine the exact maximum before resolution.