Recent forecasts from multiple models place Ankara’s September 19 daytime maximum in the 23–25 °C range, with ensemble consensus favoring 24 °C under partly cloudy skies and light winds. The narrow spread between 23 °C and 24 °C reflects typical late-summer variability in insolation and boundary-layer mixing as a weak frontal boundary approaches from the northwest. Nighttime radiative cooling to around 12–14 °C sets a low baseline, while daytime heating depends on cloud timing and any brief showers that could suppress the peak by 1–2 °C. Historical September normals near 26 °C provide context, yet current cooler air advection has trimmed expectations. Traders assign roughly 40 % combined probability to 23–24 °C because small shifts in cloud cover or model bias can easily move the recorded high across that threshold before resolution.