Recent forecasts from sources like AccuWeather and Met Office-aligned models indicate London overnight lows near 14–15°C for August 20, aligning with the market's emphasis on 15°C (46.5%) and 16°C (31.5%) as frontrunners. Typical August minima average 13–14°C, but current mild patterns—with daytime highs in the low-to-mid 20s and limited radiative cooling under partly cloudy skies—support slightly higher values. A gradual cooling trend noted in late-week guidance could allow 14°C (17%) if Atlantic air advection strengthens, while probabilities drop sharply below 13°C due to the low historical frequency of such anomalies this time of year. Model consensus and short-range updates remain the key near-term catalysts for any shifts in implied probabilities.