Current forecast models from European and global ensembles indicate mild early-autumn conditions over Istanbul, with maximum temperatures most likely peaking near 20–22 °C on October 7. The Black Sea and Sea of Marmara exert a moderating maritime influence while a weak high-pressure ridge favors limited cloud cover and light northerly flow, keeping daytime maxima close to seasonal normals of roughly 21 °C. Recent model runs show only modest spread, with no strong warm or cold advection signals expected in the next 48 hours. Traders therefore assign the highest implied probabilities to the 20–22 °C range, reflecting the narrow uncertainty band typical for a two-day forecast horizon in this region.