**Recent forecasts from the UK Met Office and other models indicate a mild, mostly settled pattern for London on October 3, 2026, with daytime maxima expected in the low 20s Celsius, aligning closely with the market's leading implied probabilities for 21°C (44.5%) and 22°C (30.5%).** High pressure is maintaining stable conditions with light winds and limited cloud cover or isolated showers, supporting temperatures well above the long-term October 3 average high of 17.6°C at London Heathrow. Model consensus shows afternoon peaks around 20–22°C depending on exact timing of any breaks in cloud and wind direction, with minimal risk of reaching 23°C or higher given the seasonal decline in solar heating and the absence of strong warm advection. Lower outcomes like 20°C remain plausible if thicker cloud develops, but current runs favor the upper end of that narrow range. Traders appear to be weighting the consistency of these near-term model outputs, which have shown little shift over the past day amid the ongoing warm, dry spell.