Current forecasts from multiple models, including Met Office and ICON-EU, indicate Istanbul's September 29 low near 16–17°C amid widespread showers, high humidity above 80%, and northeasterly winds. Persistent cloud cover and precipitation suppress radiative cooling at night while advecting cooler maritime air from the Black Sea and Marmara, holding temperatures close to late-September climatology rather than allowing extremes. Model consensus shows limited spread around this range, with any deviation hinging on exact timing of rain bands or wind shifts that could alter boundary-layer mixing. Updated ECMWF and GFS runs ahead of resolution will clarify whether the low edges toward 14–15°C or holds above 18°C.