October in Waterbury averages a daily high of 18.1°C with nights around 5.9°C. Expect roughly 11.7 wet days totalling 110.3mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Waterbury is August–October.
Based on MERIDEN MARKHAM MUNICIPAL AIRPORT, CT US (19.4km), 1995–2024. 26 years of October data.