Clear skies and light northeasterly winds overnight are allowing significant radiative cooling across the Po Valley, with Milan forecast to reach a minimum near 14–16 °C under a stable high-pressure regime. Model consensus from recent runs shows only modest spread in the exact overnight low, driven by subtle differences in boundary-layer moisture and urban heat-island effects at official measurement sites. Late-September climatology places typical minima around 14–15 °C, so trader focus on the 10–12 °C outcomes reflects uncertainty over whether cooling will exceed guidance by 2–4 °C before sunrise. No incoming fronts or increased cloud cover are expected to alter the trajectory before resolution.