**Market-implied odds heavily favor a 22–23°C peak on August 30, consistent with official Met Office guidance and model consensus for London.** The Met Office explicitly forecasts a daytime maximum of 23°C under bright or sunny intervals with isolated showers and southwesterly winds of 12–15 mph. Other numerical guidance, including ensembles, clusters tightly around 22–23°C as the most probable outcome, reflecting mild Atlantic air under a slack pressure gradient rather than the stronger anticyclonic setups that produced higher readings earlier in the summer. Recent developments reinforce this positioning: persistent cloud and showers on August 29 have kept temperatures near or below seasonal norms (around 21°C), with the pattern evolving only modestly into Sunday. This yields limited diurnal warming potential and reduces the chance of outliers above 24°C. Historical climatology for late August at London Heathrow shows an average high of ~22°C, providing a baseline against which current model runs show only modest positive anomalies. Traders appear to be pricing in the narrow uncertainty band typical of short-range UK forecasts, where small shifts in cloud cover or timing of any showers could nudge the verified maximum (from the London City Airport station) between 22°C and 23°C while keeping probabilities for 21°C or 24°C low. No major model divergences have emerged in the latest runs, supporting the current distribution.