December in Methuen averages a daily high of 5.4°C with nights around -3.5°C. Expect roughly 9.2 wet days totalling 97.9mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Methuen is May–June.
Based on LAWRENCE, MA US (3.6km), 1995–2024. 30 years of December data.