Official forecasts from the UK Met Office and ensemble models project a daytime maximum of 24°C for London on August 23, 2026, under persistent high pressure, light variable winds, and sunny intervals that allow moderate solar heating while limiting excessive warming. This places the outcome squarely in line with August climatology near 22°C, with recent model runs showing tight consensus around 23–24°C and minimal risk of stronger advection or clear-sky extremes pushing higher. Traders have accordingly priced 24°C as the clear favorite at 58.5% implied probability, followed by 23°C and 25°C, reflecting the narrow uncertainty band typical for a stable synoptic pattern where small timing differences in cloud cover or wind could shift the peak by 1°C. No significant forecast revisions have occurred in the past day, keeping secondary outcomes at low single-digit probabilities.