July in Methuen averages a daily high of 28.7°C with nights around 18°C. Expect roughly 9.9 wet days totalling 102.7mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Methuen is May–June.
Based on LAWRENCE, MA US (3.6km), 1995–2024. 29 years of July data.