March in Stevenage averages a daily high of 11.6°C with nights around 3°C. Expect roughly 10.9 wet days totalling 32.2mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Stevenage is May–September.
Based on CAMBRIDGE B. GDNS, UK (39.6km), 1995–2024. 21 years of March data.