October in Sankt Gallen averages a daily high of 4.2°C with nights around -0.7°C. Expect roughly 13.1 wet days totalling 191mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Sankt Gallen is June–August.
Based on SAENTIS, SZ (19.4km), 1995–2024. 30 years of October data.