Forecast models from agencies including the UK Met Office and BBC indicate a tight range of 21–23°C for Munich’s maximum on June 15 under weak pressure gradients and mostly sunny intervals. Small differences in predicted afternoon cloud cover, boundary-layer mixing, and weak advection from the west create the observed spread, with ensemble members clustering near 22°C. Historical June averages of 21–22°C provide context, while the absence of strong frontal systems or significant moisture limits upside potential beyond 23°C. Traders price the narrow uncertainty because new model runs and observational updates can still shift the precise peak by 1°C before resolution.