Forecast models from sources including the German Weather Service and global ensembles indicate a daytime high of 19–20 °C in Munich on September 17, 2026, consistent with the seasonal average of 19.5 °C and current observations showing afternoon readings near 19 °C under partly cloudy skies with light westerly winds. This alignment of verified measurements and short-range consensus forecasts underpins the market’s near-certain pricing at 20 °C. A modest shift in cloud cover, a later clearing that allows additional solar heating, or a revised observational peak could still produce a 21 °C reading, though such adjustments appear unlikely given the stable synoptic pattern and proximity to resolution.