Current ensemble forecasts from the Met Office and European models indicate peak temperatures of 28–30°C as the most likely outcome for London on June 22, driven by high pressure building over southern England combined with southerly airflow advecting warmer air masses. These values sit near the June climatological average high of 28°C yet reflect modest positive anomalies in recent model runs, with limited cloud cover and light winds favoring daytime heating. Uncertainty around the exact maximum arises from potential afternoon convection or subtle steering variations, keeping probabilities distributed across 28–30°C while lower odds attach to extremes outside this range. Updated model guidance over the next 48 hours will further constrain resolution criteria tied to official observations.