Latest ECMWF and GFS ensemble forecasts project Munich's highest temperature on April 17 clustering around 17-20°C amid a transitional spring pattern with a high-pressure ridge over Central Europe potentially yielding southerly winds and partial clearing, driving the slight 26% market-implied edge for 22°C or higher as traders weigh optimistic clear-sky outliers against baseline climatological averages of 13-15°C. Key differentiators include cloud cover uncertainty—full sunshine could push peaks above 21°C via enhanced solar heating, while scattered showers or overcast skies from residual fronts cap readings at 15-18°C—and subtle air mass contrasts, with warmer Mediterranean inflows versus cooler continental air. DWD updates and new model runs expected within 24-48 hours may sharpen consensus before resolution via official Munich Airport observations.