Recent forecasts from the Met Office and ensemble models indicate a mild overnight period for London on October 15, with minimum temperatures expected near 10–15 °C under cloudy skies and persistent southwesterly flow that limits radiative cooling. This setup, following a warmer daytime maximum around 20–21 °C, has positioned 15 °C as the market leader by aligning closely with the most probable model consensus. Higher outcomes like 16 °C gain support from some warmer guidance, while cooler probabilities reflect residual uncertainty in exact minimum timing and localized variations. No significant cold-air intrusions or clear-sky conditions are anticipated to drive sharper drops, keeping probabilities clustered around these values ahead of final observational data.