Recent Met Office guidance shows London under persistent cloud cover with light rain or drizzle through much of the morning, limiting solar heating and capping afternoon temperatures near 23 °C. Light westerly winds and high humidity further suppress peak readings, though gradual clearing from the northwest could permit modest warming into the low 20s Celsius if skies brighten earlier than expected. Model consensus places the daily maximum between 22–23 °C, aligning with the closely matched market-implied odds at 37.5 % and 31.5 % respectively. Historical September maxima in central London average around 19–20 °C, so current conditions reflect above-normal but not exceptional warmth. Traders will watch updated hourly observations and any late-afternoon model runs for confirmation of whether readings reach or fall short of the 23 °C threshold before resolution.