August in Haverhill averages a daily high of 27.6°C with nights around 15.2°C. Expect roughly 9.8 wet days totalling 93mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Haverhill is May–June.
Based on HAVERHILL, MA US (2.3km), 1995–2024. 29 years of August data.