April in Ellicott City averages a daily high of 19.1°C with nights around 6.7°C. Expect roughly 10.9 wet days totalling 89.2mm. Comfortable conditions for being outdoors all day.
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 April data.