Forecast models from agencies including the Met Office and Open-Meteo show London under persistent mild southwesterly flow on October 15, supporting an overnight minimum near 15°C amid cloudy skies and light winds that limit radiative cooling. This consensus aligns with the market's 90.5% implied probability for a 15°C daily low, consistent with seasonal baselines for mid-October when average minima hover around 10–12°C but current synoptic patterns sustain above-normal warmth. Key variables that could shift the outcome include clearer skies enhancing heat loss or an earlier wind shift introducing cooler air, though ensemble guidance indicates low likelihood of such changes before resolution.