June in Lowell averages a daily high of 26.1°C with nights around 12.9°C. Expect roughly 11.4 wet days totalling 106.5mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Lowell is May–June.
Based on LOWELL, MA US (4km), 1995–2024. 28 years of June data.