October in Hamilton averages a daily high of 20°C with nights around 5.9°C. Expect roughly 10.1 wet days totalling 77.3mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Hamilton is September–October.
Based on HAMILTON BUTLER CO REGIONAL AIRPORT, OH US (5.5km), 1995–2024. 27 years of October data.