April in Lynn averages a daily high of 13.4°C with nights around 3.8°C. Expect roughly 10.5 wet days totalling 108.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Lynn is June–September.
Based on MARBLEHEAD, MA US (7.9km), 1995–2024. 29 years of April data.