Recent official forecasts from the Met Office and aligned models indicate a settled high-pressure regime over southern England, with clear to partly cloudy skies and light variable winds promoting radiative cooling overnight into August 23. This setup favors an early-morning minimum near 13–14 °C, consistent with London’s late-August climatology of roughly 13.5 °C. Slight differences between leading outcomes stem from uncertainties in residual cloud timing, exact wind speeds, and the strength of the urban heat-island effect, which can add 1–2 °C in central areas versus suburban stations. Recent model runs show minimal spread, supporting the tight market clustering around these two values while lower probabilities for 12 °C or 15 °C reflect limited downside or upside potential under current atmospheric conditions.