January in Ellicott City averages a daily high of 6.2°C with nights around -3.2°C. Expect roughly 10 wet days totalling 80.6mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Ellicott City is April–May.
Based on BALTIMORE WASHINGTON INTERNATIONAL AIRPORT, MD US (14.4km), 1995–2024. 30 years of January data.