Current numerical weather models, including GFS guidance, indicate a stable high-pressure regime over Istanbul with northeasterly flow maintaining mostly clear to partly cloudy skies and minimal precipitation risk through October 5. This setup supports a daytime maximum near 20°C, consistent with the market's leading 52% implied probability for that outcome and secondary support around 19–21°C. Recent model runs show limited spread, with afternoon temperatures peaking in the 19–21°C range amid moderate winds and dew points near 11–12°C. Historical October averages of roughly 19°C provide context, but the current pattern favors a slight positive anomaly without significant warm-air advection or cloud cover to alter the peak. Updated forecasts from monitoring agencies will refine resolution criteria ahead of market close.