May in Worcester averages a daily high of 19.1°C with nights around 8.7°C. Expect roughly 13 wet days totalling 94.3mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Worcester is June–September.
Based on WORCESTER REGIONAL AIRPORT, MA US (5.9km), 1995–2024. 30 years of May data.