December in Haverhill averages a daily high of 5°C with nights around -5°C. Expect roughly 11.3 wet days totalling 114.5mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Haverhill is May–June.
Based on HAVERHILL, MA US (2.3km), 1995–2024. 29 years of December data.