Met Office hourly forecasts for London on May 14, 2026, project a maximum temperature of 12–13°C in the mid-afternoon, with current midday observations at 11–12°C under light showers and northerly winds at 5–10 mph ushering cool polar maritime air that caps warming below seasonal norms of 16–17°C. Trader consensus heavily favors 11°C (51.4% implied probability), reflecting persistent 70–90% precipitation odds, gusts to 20 mph, and risk of hail or thunder suppressing peaks amid variable cloud—morning lows near 6–8°C and slow diurnal rise underscore this tight range. BBC Weather aligns at 12°C high, but model ensembles show limited upside potential; real-time station data from Heathrow or central sites will confirm before evening resolution, with brief sunny spells as the key uncertainty.