March in Lancaster averages a daily high of 11.2°C with nights around -0.3°C. Expect roughly 10.2 wet days totalling 82.8mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Lancaster is May–June.
Based on LANCASTER 2 NE FILT PLANT, PA US (3km), 1995–2024. 30 years of March data.