**Current forecasts from major numerical weather prediction models, including those from the UK Met Office and ECMWF, indicate a minimum temperature of 10°C for London on June 11, 2026, driven by typical early-summer radiative cooling under mostly clear to partly cloudy overnight conditions following daytime highs near 19–21°C.** This aligns with climatological baselines for mid-June, where average lows hover around 11–12°C, and recent model runs show consistent output with limited spread due to stable high-pressure influences and light winds that promote efficient surface heat loss without significant advection of warmer air. Trader consensus at 99.7% for exactly 10°C reflects high confidence in these ensemble forecasts and historical verification rates for similar setups, though the market-implied odds acknowledge minor uncertainty in precise measurement at official stations. Realistic challenges could arise from unexpected increases in low-level cloud cover raising the minimum by 1–2°C, a shift in steering patterns introducing milder maritime air, or localized urban heat-island effects varying by station—factors that updated model runs or morning observations could still adjust before final resolution.