April in Blackburn averages a daily high of 13.3°C with nights around 4.8°C. Expect roughly 12.6 wet days totalling 52mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Blackburn is May–September.
Based on PRESTON MOOR PARK, UK (14.7km), 1995–2024. 24 years of April data.