October in Stevenage averages a daily high of 15.9°C with nights around 7.9°C. Expect roughly 12.9 wet days totalling 60mm. Generally workable, with some weather to plan around.
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 October data.