July in Durham averages a daily high of 32.6°C with nights around 21.1°C. Expect roughly 11.5 wet days totalling 134mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Durham is April–May.
Based on RALEIGH DURHAM INTERNATIONAL AIRPORT, NC US (15.4km), 1995–2024. 30 years of July data.