**Forecast models from sources including the Turkish Meteorological Service and international agencies converge on a maximum of 19°C for Ankara on October 4 under clear skies, high pressure, and light northeasterly winds, driving the 66% market-implied probability for that outcome.** Dry conditions and minimal cloud cover allow efficient daytime radiative heating, while the seasonal October baseline and recent cooling trend from prior days limit upside potential. Hourly profiles peak near 19°C in the afternoon before rapid evening decline, with low precipitation risk supporting tight clustering around 18–20°C. Traders assign the remaining probability mass to minor model spread or observational adjustments, consistent with typical forecast uncertainty ranges of 1–2°C this far into the day. Final official readings will resolve the market.