Recent meteorological forecasts from multiple models indicate a daytime high near 20–21°C for Istanbul on October 6 under stable high-pressure conditions and northeasterly flow. This pattern favors modest daytime warming from partly cloudy skies and light to moderate winds, consistent with early-autumn climatology where highs typically range 18–22°C. Limited moisture and absence of frontal systems or significant cloud cover support the market-implied consensus around 20°C, while minor model spreads account for the secondary probabilities on 19°C and 21°C. Final official readings tomorrow will resolve the outcome.