March in Harlem averages a daily high of 10.5°C with nights around 2.2°C. Expect roughly 10.8 wet days totalling 105.7mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Harlem is May–June.
Based on NY CITY CENTRAL PARK, NY US (3.8km), 1995–2024. 30 years of March data.