July in Nashua averages a daily high of 29°C with nights around 16.4°C. Expect roughly 10.9 wet days totalling 111.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Nashua is May–June.
Based on NASHUA 2 NNW, NH US (2.9km), 1995–2024. 27 years of July data.