Recent short-range forecasts from global models show Istanbul under mostly clear skies on October 9 with southerly or southwesterly flow advecting milder air, supporting daytime maxima near 22–23°C. Light winds and low cloud cover will enhance solar heating during peak insolation hours, while sea surface temperatures in the Marmara and Black Sea regions provide a moderating baseline typical for early October. Ensemble spreads remain modest, with minor differences in exact timing of the thermal peak or subtle shifts in boundary-layer moisture explaining the tight clustering of market-implied probabilities around 23°C and 24°C. Updated runs from agencies such as the Turkish State Meteorological Service and ECMWF will refine these details ahead of resolution.