Current Met Office and BBC forecasts indicate a minimum of 16°C for London on August 16 under sunny intervals and light northerly winds, driving the market's tight clustering around 16–18°C outcomes. Overnight lows will hinge on radiative cooling rates after daytime peaks near 25–26°C, modulated by cloud cover, dew point, and urban heat retention from the London heat island. Any increase in low-level moisture or residual instability from the preceding thundery heatwave could limit cooling and push readings toward 17–18°C, while clearer, drier air would favor the 16°C threshold. Ensemble model spread remains narrow this close to the date, with historical August minima typically 13–14°C providing limited upward bias.