January in Lowell averages a daily high of 1.5°C with nights around -8.8°C. Expect roughly 11.4 wet days totalling 97.6mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Lowell is May–June.
Based on LOWELL, MA US (4km), 1995–2024. 29 years of January data.