Forecast models from sources including the GFS consistently project a daytime high of 22°C in Munich on October 4, 2026, under partly cloudy skies with light northeasterly winds and minimal precipitation risk. This aligns with the market's near-certain 22°C outcome, exceeding the 1991–2020 average high of 16.7°C for the date due to a stable high-pressure pattern favoring mild autumn warmth. Official observations through evening show temperatures tracking toward this peak without significant model divergence. Resolution hinges on the precise maximum recorded at authorized stations; minor shifts in cloud cover or localized wind could alter the exact reading by 1°C, though current data make deviations unlikely.