October in Weymouth averages a daily high of 17.4°C with nights around 7.1°C. Expect roughly 11.4 wet days totalling 139.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Weymouth is May–September.
Based on HINGHAM, MA US (2.3km), 1995–2024. 30 years of October data.