August in Methuen averages a daily high of 28°C with nights around 17.1°C. Expect roughly 9.4 wet days totalling 92mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Methuen is May–June.
Based on LAWRENCE, MA US (3.6km), 1995–2024. 30 years of August data.